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Class   987ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM
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E-subclasses in USPC Class 987/1-368 were created as duplicates of EPO groups in C07F. With the implementation of CPC, these E subclasses should no longer be used. Instead, use CPC groups in C07F.
 [List of Pre Grant Publications for class 987 subclass 1][List of Patents for class 987 subclass 1]1 COMPOUND CONTAINS TWO OR MORE HEAVY METAL ATOMS WHICH ARE IN DIFFERENT GROUPS OF THE PERIODIC SYSTEM (19/00; 19/00B)
[List of Pre Grant Publications for class 987 subclass 2][List of Patents for class 987 subclass 2]2 HEAVY METAL COMPOUNDS WHEREIN THE METAL IS BONDED DIRECTLY TO AT LEAST TWO RING SYSTEMS (METALLOCENES) (17/00)
 [List of Pre Grant Publications for class 987 subclass 3][List of Patents for class 987 subclass 3]3 Subclass 3 indent level is 1 Group 8 metal atom (Fe, Co, Ni, Pt, Rh, Pd, Ru, Ir, Os) (17/02)
[List of Pre Grant Publications for class 987 subclass 4][List of Patents for class 987 subclass 4]4 COBALT COMPOUNDS (15/06)
 [List of Pre Grant Publications for class 987 subclass 5][List of Patents for class 987 subclass 5]5 Subclass 5 indent level is 1 Devoid of any cobalt atom directly bonded to carbon (15/06B)
[List of Pre Grant Publications for class 987 subclass 6][List of Patents for class 987 subclass 6]6 NICKEL COMPOUNDS (15/04)
 [List of Pre Grant Publications for class 987 subclass 7][List of Patents for class 987 subclass 7]7 Subclass 7 indent level is 1 Devoid of any nickel atom directly bonded to carbon (15/04B)
[List of Pre Grant Publications for class 987 subclass 8][List of Patents for class 987 subclass 8]8 IRON COMPOUNDS (15/02; 15/03)
 [List of Pre Grant Publications for class 987 subclass 9][List of Patents for class 987 subclass 9]9 Subclass 9 indent level is 1 Devoid of any iron atom directly bonded to carbon (15/02B)
[List of Pre Grant Publications for class 987 subclass 10][List of Patents for class 987 subclass 10]10 PLATINUM COMPOUNDS (15/00N7)
 [List of Pre Grant Publications for class 987 subclass 11][List of Patents for class 987 subclass 11]11 Subclass 11 indent level is 1 Devoid of any platinum atom directly bonded to carbon (15/00N7B)
[List of Pre Grant Publications for class 987 subclass 12][List of Patents for class 987 subclass 12]12 RHODIUM COMPOUNDS (15/00N6)
 [List of Pre Grant Publications for class 987 subclass 13][List of Patents for class 987 subclass 13]13 Subclass 13 indent level is 1 Devoid of any rhodium atom directly bonded to carbon (15/00N6B)
[List of Pre Grant Publications for class 987 subclass 14][List of Patents for class 987 subclass 14]14 PALLADIUM COMPOUNDS (15/00N5)
 [List of Pre Grant Publications for class 987 subclass 15][List of Patents for class 987 subclass 15]15 Subclass 15 indent level is 1 Devoid of any palladium atom directly bonded to carbon (15/00N5B)
 [List of Pre Grant Publications for class 987 subclass 16][List of Patents for class 987 subclass 16]16 RUTHENIUM COMPOUNDS (15/00N4; 15/00N4B)
 [List of Pre Grant Publications for class 987 subclass 17][List of Patents for class 987 subclass 17]17 IRIDIUM COMPOUNDS (15/00N3; 15/00N3B)
 [List of Pre Grant Publications for class 987 subclass 18][List of Patents for class 987 subclass 18]18 OSMIUM COMPOUNDS (15/00N2; 15/00N2B)
[List of Pre Grant Publications for class 987 subclass 19][List of Patents for class 987 subclass 19]19 COMPOUNDS CONTAINING ELEMENTS OF THE 7TH GROUP OF THE PERIODIC SYSTEM (MN, TC, RE) (13/00)
 [List of Pre Grant Publications for class 987 subclass 20][List of Patents for class 987 subclass 20]20 Subclass 20 indent level is 1 Devoid of any Group 7 atom directly bonded to carbon (13/00B)
[List of Pre Grant Publications for class 987 subclass 21][List of Patents for class 987 subclass 21]21 COMPOUNDS CONTAINING ELEMENTS OF THE 6TH GROUP OF THE PERIODIC SYSTEM (CR, MO, W, PO) (11/00)
 [List of Pre Grant Publications for class 987 subclass 22][List of Patents for class 987 subclass 22]22 Subclass 22 indent level is 1 Devoid of any Group 6 atom directly bonded to carbon (11/00B)
 [List of Pre Grant Publications for class 987 subclass 23][List of Patents for class 987 subclass 23]23 BISMUTH COMPOUNDS (9/94)
[List of Pre Grant Publications for class 987 subclass 24][List of Patents for class 987 subclass 24]24 ANTIMONY COMPOUNDS (9/90; 9/90B; 9/90C; 9/90D; 9/90E)
 [List of Pre Grant Publications for class 987 subclass 25][List of Patents for class 987 subclass 25]25 Subclass 25 indent level is 1 Contains aryl group (9/92)
[List of Pre Grant Publications for class 987 subclass 26][List of Patents for class 987 subclass 26]26 ARSENIC COMPOUNDS (9/70C)
[List of Pre Grant Publications for class 987 subclass 27][List of Patents for class 987 subclass 27]27 Subclass 27 indent level is 1 Arsenic compounds devoid of any arsenic as ring atom in a ring system (9/66; 9/68; 9/70; 9/70B; 9/72; 9/72B; 9/72C)
 [List of Pre Grant Publications for class 987 subclass 28][List of Patents for class 987 subclass 28]28 Subclass 28 indent level is 2 Ring system containing at least one atom other than metal or carbon as ring atoms (9/80; 9/80B; 9/80C; 9/82; 9/84; 9/86; 9/88)
 [List of Pre Grant Publications for class 987 subclass 29][List of Patents for class 987 subclass 29]29 Subclass 29 indent level is 2 Contains aryl group (9/74; 9/74B; 9/74C; 9/76; 9/78)
[List of Pre Grant Publications for class 987 subclass 30][List of Patents for class 987 subclass 30]30 PHOSPHORUS COMPOUNDS (9/02; 9/06)
 [List of Pre Grant Publications for class 987 subclass 31][List of Patents for class 987 subclass 31]31 Subclass 31 indent level is 1 Compound contains a ring which is devoid of a metal atom as ring member and wherein the ring contains at least one atom other than C, N, O, S, P, Se, or Te as a ring atom; e.g., boron, etc. (9/6596)
 [List of Pre Grant Publications for class 987 subclass 32][List of Patents for class 987 subclass 32]32 Subclass 32 indent level is 1 Compound contains at least one atom of silicon or boron (9/02G)
[List of Pre Grant Publications for class 987 subclass 33][List of Patents for class 987 subclass 33]33 Subclass 33 indent level is 1 Compound contains a ring which is devoid of a metal atom and contains at least one P atom as ring member (9/6564; 9/6564V; 9/6568; 9/6568B; 9/6568C; 9/6568D; 9/6568E; 9/6568F)
[List of Pre Grant Publications for class 987 subclass 34][List of Patents for class 987 subclass 34]34 Subclass 34 indent level is 2 Ring contains N and P only, or may include in addition to the required N and P, only C, S, or O (9/6581; 9/6584; 9/6584A)
 [List of Pre Grant Publications for class 987 subclass 36][List of Patents for class 987 subclass 36]36 Subclass 36 indent level is 2 Ring contains S and P only, or may include in addition to the required S and P, only C or O (9/6578; 9/6578D)
[List of Pre Grant Publications for class 987 subclass 37][List of Patents for class 987 subclass 37]37 Subclass 37 indent level is 2 Ring contains O and P only, or may include in addition to the required O and P, only C (9/6571)
[List of Pre Grant Publications for class 987 subclass 49][List of Patents for class 987 subclass 49]49 Subclass 49 indent level is 1 Ring is devoid of a P or a metal atom and contains at least one hereto atom (O, S, N, Se, or Te) and may or may not contain C (9/547; 9/6524)
[List of Pre Grant Publications for class 987 subclass 50][List of Patents for class 987 subclass 50]50 Subclass 50 indent level is 2 At least two rings, each ring containing at least one hetero atom, and wherein the rings are condensed directly to each other or condensed together through a common carbocyclic ring system (9/6561)
[List of Pre Grant Publications for class 987 subclass 54][List of Patents for class 987 subclass 54]54 Subclass 54 indent level is 2 At least two different rings containing hetero atoms or wherein, if the rings are the same, the substituents on at least two of the rings are different (9/6558; 9/6558B)
[List of Pre Grant Publications for class 987 subclass 56][List of Patents for class 987 subclass 56]56 Subclass 56 indent level is 2 Ring contains S only, or may include in addition to the required S, only C, Se, or Te (9/6553)
[List of Pre Grant Publications for class 987 subclass 58][List of Patents for class 987 subclass 58]58 Subclass 58 indent level is 2 Ring contains O only, or may include in addition to the required O, only C, S, Se, or Te (9/655)
[List of Pre Grant Publications for class 987 subclass 61][List of Patents for class 987 subclass 61]61 Subclass 61 indent level is 2 Ring contains N and S only, or may include in addition to the required N and S, only C, O, Se, or Te (9/6536)
[List of Pre Grant Publications for class 987 subclass 65][List of Patents for class 987 subclass 65]65 Subclass 65 indent level is 2 Ring contains N and O only, or may include in addition to the required N and O, only C (9/6527; 9/653; 9/653V)
[List of Pre Grant Publications for class 987 subclass 67][List of Patents for class 987 subclass 67]67 Subclass 67 indent level is 2 Exactly three N atoms as only hetero atoms in ring (9/6515)
[List of Pre Grant Publications for class 987 subclass 75][List of Patents for class 987 subclass 75]75 Subclass 75 indent level is 2 Exactly two Ns as only hetero atom in ring (9/645)
[List of Pre Grant Publications for class 987 subclass 90][List of Patents for class 987 subclass 90]90 Subclass 90 indent level is 2 Single N as only hetero atom in ring (9/553; 9/568)
 [List of Pre Grant Publications for class 987 subclass 91][List of Patents for class 987 subclass 91]91 Subclass 91 indent level is 3 Seven or more atoms in ring containing the single N atom (9/553A7)
[List of Pre Grant Publications for class 987 subclass 92][List of Patents for class 987 subclass 92]92 Subclass 92 indent level is 3 Six atoms in ring containing the single N atom (9/576)
[List of Pre Grant Publications for class 987 subclass 103][List of Patents for class 987 subclass 103]103 Subclass 103 indent level is 3 Five-membered ring containing a single N atom (9/572; 9/572G; 9/572K; 9/572K2; 9/572K4; 9/572R)
 [List of Pre Grant Publications for class 987 subclass 106][List of Patents for class 987 subclass 106]106 Subclass 106 indent level is 3 Four-membered ring containing a single N atom is condensed or bridged to a carbocyclic ring system (9/568V)
 [List of Pre Grant Publications for class 987 subclass 107][List of Patents for class 987 subclass 107]107 Subclass 107 indent level is 3 N atom of four-membered ring containing a single N atom is bonded directly to a P atom or indirectly to a P atom other than through a ring atom of the four-membered ring (9/568E)
 [List of Pre Grant Publications for class 987 subclass 108][List of Patents for class 987 subclass 108]108 Subclass 108 indent level is 3 Three-membered ring containing a single N atom (9/564)
 [List of Pre Grant Publications for class 987 subclass 109][List of Patents for class 987 subclass 109]109 Subclass 109 indent level is 1 Quaternary compounds containing the structure (C)a-P-(Z)b where a+b=4, a=1-3, b=1-3, and Z is an atom other than C or H (9/54K)
[List of Pre Grant Publications for class 987 subclass 110][List of Patents for class 987 subclass 110]110 Subclass 110 indent level is 1 Quaternary phosphonium compounds (C)a-P-(H)b wherein a+b=4, a=1-4, b=1-3, (9/54; 9/54A1; 9/54A1+W; 9/54A1+W2)
 [List of Pre Grant Publications for class 987 subclass 111][List of Patents for class 987 subclass 111]111 Subclass 111 indent level is 2 Contains the structure aryl-(C)n-P where n is at least one (9/54A7)
 [List of Pre Grant Publications for class 987 subclass 112][List of Patents for class 987 subclass 112]112 Subclass 112 indent level is 2 Contains two or more phosphonium P atoms (9/54A6)
 [List of Pre Grant Publications for class 987 subclass 113][List of Patents for class 987 subclass 113]113 Subclass 113 indent level is 2 Contains the structure (aryl group*)-P where * indicates a direct bond between a carbon of the aryl ring and the P atom (9/54A4)
 [List of Pre Grant Publications for class 987 subclass 114][List of Patents for class 987 subclass 114]114 Subclass 114 indent level is 2 Contains the structure "carbocyclic ring"-P where "--" indicates that a ring carbon of the carbocyclic ring may or may not be bonded directly to the P atom (9/54A3)
 [List of Pre Grant Publications for class 987 subclass 115][List of Patents for class 987 subclass 115]115 Subclass 115 indent level is 2 Contains the structure "ethylenic group"-P where "--" indicates that a carbon of the ethylenic group may or may not be bonded directly to the P atom (9/54A2)
[List of Pre Grant Publications for class 987 subclass 116][List of Patents for class 987 subclass 116]116 Subclass 116 indent level is 1 Contains at least one (C)-P bond (9/28)
 [List of Pre Grant Publications for class 987 subclass 117][List of Patents for class 987 subclass 117]117 Subclass 117 indent level is 2 Pentavalent P compound containing a P(=N) bond and wherein the P atom is bonded directly to three carbon atoms (9/535D; 9/535D2)
 [List of Pre Grant Publications for class 987 subclass 118][List of Patents for class 987 subclass 118]118 Subclass 118 indent level is 2 Pentavalent P compound containing a P(=C) bond and wherein the P atom is not bonded directly to chalcogen (9/535B)
 [List of Pre Grant Publications for class 987 subclass 119][List of Patents for class 987 subclass 119]119 Subclass 119 indent level is 2 Pentavalent P compound containing at least one bond to carbon and wherein the other four valences are bonded directly to four separate atoms, none of which are chalcogen (9/535)
 [List of Pre Grant Publications for class 987 subclass 120][List of Patents for class 987 subclass 120]120 Subclass 120 indent level is 2 Pentavalent P compound having the structure (X=C*)-P(=X) or (cyano*)-P(=X) where X is chalcogen, * indicates a direct bond of the C of the C=X group or of the C of the cyano group directly to the P atom, and the other atoms bonded directly to the P atom are either carbon and hydrogen (9/53A9; 9/53P; 9/53Y)
[List of Pre Grant Publications for class 987 subclass 121][List of Patents for class 987 subclass 121]121 Subclass 121 indent level is 2 Pentavalent P compound having the structure (C)-P(=X)(C or H)(C or H) where X is chalcogen (9/53)
 [List of Pre Grant Publications for class 987 subclass 126][List of Patents for class 987 subclass 126]126 Subclass 126 indent level is 2 Trivalent compounds having the structure (Hal)-P-(C)(C or H), or (Hal)-2-P(C), or pentavalent compounds having the structure (Hal)-P(=X)(C) (C or H) or (Hal)2-P(=X)(C) where X is chalcogen (9/52)
 [List of Pre Grant Publications for class 987 subclass 127][List of Patents for class 987 subclass 127]127 Subclass 127 indent level is 2 Trivalent P compound having the structure (C or H)(C)-P-P-(C)(C or H) (9/50P)
 [List of Pre Grant Publications for class 987 subclass 128][List of Patents for class 987 subclass 128]128 Subclass 128 indent level is 2 Trivalent P compound containing a metal atom and having the structure (C)-P(C or H or Metal) (C or H or Metal) (9/50Y; 9/50Z; 9/50Z2; 9/50Z4; 9/50Z6; 9/50Z8)
[List of Pre Grant Publications for class 987 subclass 129][List of Patents for class 987 subclass 129]129 Subclass 129 indent level is 2 Trivalent P compound having the structure (C)-P-(C or H)(C or H) (9/50)
 [List of Pre Grant Publications for class 987 subclass 135][List of Patents for class 987 subclass 135]135 Subclass 135 indent level is 2 Trivalent P compound having the structure (C)-P-(N) or (C)-P(Hal) (9/48F; 9/48H)
 [List of Pre Grant Publications for class 987 subclass 136][List of Patents for class 987 subclass 136]136 Subclass 136 indent level is 2 Trivalent P having the structure (C)2-P(XH or X-Salt) or pentavalent P having the structure (C)2-P(=X) (XH or X-Salt) where X is chalcogen (9/46)
[List of Pre Grant Publications for class 987 subclass 137][List of Patents for class 987 subclass 137]137 Subclass 137 indent level is 2 Trivalent P having the structure (C)-P-(XH or X-Salt) (XH or X-Salt or H) or pentavalent P having the structure (C)-P(=X) (XH or X-Salt) (XH or X-Salt or H) where X is chalcogen (9/48)
[List of Pre Grant Publications for class 987 subclass 140][List of Patents for class 987 subclass 140]140 Subclass 140 indent level is 2 Pentavalent P having the structure (C)-P(=X) (X) (N) or (C)-P(=X) (N)2 where X is chalcogen (9/44; 9/44A; 9/44A1; 9/44A6; 9/44A9; 9/44B; 9/44B1; 9/44B9)
[List of Pre Grant Publications for class 987 subclass 144][List of Patents for class 987 subclass 144]144 Subclass 144 indent level is 2 Pentavalent P having the structure (C)-P(=X) (X) (Hal) (X) or (C)-P(=X) (Hal)2 wherein X is chalcogen (9/42)
[List of Pre Grant Publications for class 987 subclass 146][List of Patents for class 987 subclass 146]146 Subclass 146 indent level is 2 Pentavalent P having the structure (C)-P(=X) (X) (X) where X is chalcogen (9/38)
[List of Pre Grant Publications for class 987 subclass 147][List of Patents for class 987 subclass 147]147 Subclass 147 indent level is 3 Pentavalent P having the structure (C)-P(=X) (X) (X-*C) and * indicates a direct bond to the adjacent X atom (9/40)
 [List of Pre Grant Publications for class 987 subclass 148][List of Patents for class 987 subclass 148]148 Subclass 148 indent level is 4 Contains the structure (C)-P(=X) (X) (X-*acyl), (C)-P(=X) (X-C) (X-*Z), or (C)-P(=X) (X) (X-*cyano) where Z is an atom other than C or H and * indicates a direct bond to the adjacent X atom (9/40C9; 9/40C9+Q; 9/40C9+U)
[List of Pre Grant Publications for class 987 subclass 149][List of Patents for class 987 subclass 149]149 Subclass 149 indent level is 4 Contains the structure (C)-P(=X) (X) (X-aryl) (9/40C4)
 [List of Pre Grant Publications for class 987 subclass 151][List of Patents for class 987 subclass 151]151 Subclass 151 indent level is 4 Contains the structure (C)-P(=X) (X) (X-carbocyclic ring) (9/40C3)
 [List of Pre Grant Publications for class 987 subclass 152][List of Patents for class 987 subclass 152]152 Subclass 152 indent level is 4 Contains the structure (C)-P(=X) (X) (X-ethylenic group) (9/40C2)
 [List of Pre Grant Publications for class 987 subclass 153][List of Patents for class 987 subclass 153]153 Subclass 153 indent level is 4 Contains the structure (X=C*)-P(=X) (X) (X-C) or (cyano*)-P(=X) (X) (X-C) where * indicates a direct bond of the C of the C=X group or of the C atom of the cyano group directly to the P atom (9/40A9; 9/40A9+Q)
 [List of Pre Grant Publications for class 987 subclass 154][List of Patents for class 987 subclass 154]154 Subclass 154 indent level is 4 Contains the structure aryl-(C)n-P(=X) (X) (X-C) where n is at least one (9/40A7; 9/40A7+P)
 [List of Pre Grant Publications for class 987 subclass 155][List of Patents for class 987 subclass 155]155 Subclass 155 indent level is 4 Contains two or more (C)-P(=X) (X) (X-C) groups at least one (C-X) (X) (X=)-P-(C)-P(=X) (X) (X-C) group (9/40A6; 9/40A6+J; 9/40A6+U)
 [List of Pre Grant Publications for class 987 subclass 156][List of Patents for class 987 subclass 156]156 Subclass 156 indent level is 4 Contains the structure (aryl*)-P(=X) (X) (X-C), * indicates a direct bond between a carbon of the aryl ring, and the P atom (9/40A4)
 [List of Pre Grant Publications for class 987 subclass 157][List of Patents for class 987 subclass 157]157 Subclass 157 indent level is 4 Contains the structure "carbocyclic ring" -P(=X) (X) (X-C) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/40A3)
 [List of Pre Grant Publications for class 987 subclass 158][List of Patents for class 987 subclass 158]158 Subclass 158 indent level is 4 Contains the structure "ethylenic group"-P(=X) (X) (X-C) where "--" indicates that a C of the ethylenic group may or may not be bonded directly to the P atom (9/40A2)
 [List of Pre Grant Publications for class 987 subclass 159][List of Patents for class 987 subclass 159]159 Subclass 159 indent level is 4 Contains the structure (C)-P(=X) (X) (X-C-Q) where Q is a moiety containing an atom other than C or H (9/40C; 9/40C1)
 [List of Pre Grant Publications for class 987 subclass 160][List of Patents for class 987 subclass 160]160 Subclass 160 indent level is 4 Contains the structure Q-(C)-P(=X) (X) (X-C) where Q is a moiety containing an atom other than C or H (9/40A; 9/40A1; 9/40A1+U9; 9/40B)
 [List of Pre Grant Publications for class 987 subclass 161][List of Patents for class 987 subclass 161]161 Subclass 161 indent level is 3 Contains the structure (X=C)-P(=X) (X) (X) or (cyano*)-P(=X) (X) (X) where * indicates a direct bond of the C of the C=X group or of the C atom of the cyano group to the P atom (9/38A9)
 [List of Pre Grant Publications for class 987 subclass 162][List of Patents for class 987 subclass 162]162 Subclass 162 indent level is 3 Contains the structure aryl-(C)n-P(=X)(X) (X) where n is at least one (9/38A7)
[List of Pre Grant Publications for class 987 subclass 163][List of Patents for class 987 subclass 163]163 Subclass 163 indent level is 3 Contains two or more P atoms (9/38B)
 [List of Pre Grant Publications for class 987 subclass 165][List of Patents for class 987 subclass 165]165 Subclass 165 indent level is 3 Contains the structure (aryl group*)-P(=X) (X) (X) where * indicates a direct bond of one of the carbon atoms of the aryl group to the P atom (9/38A4)
 [List of Pre Grant Publications for class 987 subclass 166][List of Patents for class 987 subclass 166]166 Subclass 166 indent level is 3 Contains the structure "carbocyclic ring"-P-(=X) (X) (X) where "--" indicates that a ring carbon of the carbocyclic ring may or may not be directly bonded to the P atom (9/38A3)
 [List of Pre Grant Publications for class 987 subclass 167][List of Patents for class 987 subclass 167]167 Subclass 167 indent level is 3 Contains the structure "ethylenic group"-P(=X) (X) (X) where "--" indicates that a carbon atom of the ethylenic group may or may not be directly bonded to the P atom (9/38A2)
 [List of Pre Grant Publications for class 987 subclass 168][List of Patents for class 987 subclass 168]168 Subclass 168 indent level is 3 Contains the structure Q-(C)-P(=X) (X) (X) where Q is a moiety containing an atom other than C or H (9/38A1; 9/38A1+U6; 9/38A1+U9)
 [List of Pre Grant Publications for class 987 subclass 169][List of Patents for class 987 subclass 169]169 Subclass 169 indent level is 2 Pentavalent P having the structure (C)2-P(=X) (N) where X is chalcogen (9/36)
 [List of Pre Grant Publications for class 987 subclass 170][List of Patents for class 987 subclass 170]170 Subclass 170 indent level is 2 Pentavalent P having the structure (C)2-P(=X)(Hal) where X is chalcogen (9/34)
[List of Pre Grant Publications for class 987 subclass 171][List of Patents for class 987 subclass 171]171 Subclass 171 indent level is 2 Pentavalent P having the structure (C)2-P(=X) (X-C) where X is chalcogen (9/32)
[List of Pre Grant Publications for class 987 subclass 181][List of Patents for class 987 subclass 181]181 Subclass 181 indent level is 2 Pentavalent P having the structure (C)2-P(=X) (X-B) where X is chalcogen and B represents an atom other than C (9/30; 9/30B)
[List of Pre Grant Publications for class 987 subclass 187][List of Patents for class 987 subclass 187]187 Subclass 187 indent level is 1 Phosphorus directly bonded to N, i.e., P(N) (9/22; 9/22A)
 [List of Pre Grant Publications for class 987 subclass 188][List of Patents for class 987 subclass 188]188 Subclass 188 indent level is 2 P(=N) group containing (9/06B; 9/06B2; 9/06B2D)
 [List of Pre Grant Publications for class 987 subclass 189][List of Patents for class 987 subclass 189]189 Subclass 189 indent level is 2 (Hal)-P-(N) group containing (9/26)
 [List of Pre Grant Publications for class 987 subclass 190][List of Patents for class 987 subclass 190]190 Subclass 190 indent level is 2 P(N) (N) (N) group containing (9/22C)
 [List of Pre Grant Publications for class 987 subclass 191][List of Patents for class 987 subclass 191]191 Subclass 191 indent level is 2 P-(N=C=X) where X is chalcogen or P(-N-N) (9/22D; 9/22E)
 [List of Pre Grant Publications for class 987 subclass 192][List of Patents for class 987 subclass 192]192 Subclass 192 indent level is 2 Contains the structure (N)-P-(X-*acyl), (N)-P-(X-*Z) or (N)-P-(X-*cyano) where Z is an atom other than C or H, X is a chalcogen atom, and * indicates a direct bond to the adjacent X atom (9/24A9; 9/24A9+M; 9/24A9+Q; 9/24A9+U; 9/24A9+W)
 [List of Pre Grant Publications for class 987 subclass 193][List of Patents for class 987 subclass 193]193 Subclass 193 indent level is 2 Contains the structure P-(N-*acyl), P-(N-*Z) or (N-*cyano) where Z is an atom other than C or H and * indicates a direct bond to the adjacent N atom (9/24C9; 9/24C9+M; 9/24C9+Q; 9/24C9+U; 9/24C9+W)
[List of Pre Grant Publications for class 987 subclass 194][List of Patents for class 987 subclass 194]194 Subclass 194 indent level is 2 Contains the structure (N)-P-(X-C) wherein X is chalcogen atom, i.e., estramides (9/24)
[List of Pre Grant Publications for class 987 subclass 203][List of Patents for class 987 subclass 203]203 Subclass 203 indent level is 1 Pentavalent P containing the structure (Hal)-P(X-C) wherein X is a chalcogen atom (9/14)
 [List of Pre Grant Publications for class 987 subclass 204][List of Patents for class 987 subclass 204]204 Subclass 204 indent level is 2 S, Se, or Te is bonded directly to the P atom (9/20; 9/20B2; 9/20B4)
 [List of Pre Grant Publications for class 987 subclass 205][List of Patents for class 987 subclass 205]205 Subclass 205 indent level is 2 Containing the structure (Hal)-P-(O-ethylenic) or (Hal)-P-(O-aryl) (9/14B2; 9/14B4)
 [List of Pre Grant Publications for class 987 subclass 206][List of Patents for class 987 subclass 206]206 Subclass 206 indent level is 1 Trivalent P containing the structure (Hal)-P-(X-C) wherein X is a chalcogen atom (9/146; 9/206)
[List of Pre Grant Publications for class 987 subclass 207][List of Patents for class 987 subclass 207]207 Subclass 207 indent level is 1 Trivalent P containing the structure P-(X-C) wherein a S, Se, or Te atom is directly bonded to the P atom and wherein X is chalcogen (X may qualify as the required S, Se, or Te atom) (9/201; 9/201A1; 9/202; 9/203)
 [List of Pre Grant Publications for class 987 subclass 208][List of Patents for class 987 subclass 208]208 Subclass 208 indent level is 2 Containg the structure P-(X-carbocyclic ring) (9/204; 9/205)
[List of Pre Grant Publications for class 987 subclass 209][List of Patents for class 987 subclass 209]209 Subclass 209 indent level is 1 Pentavalent P containing the structure P-(X-C) wherein a S, Se, or Te is directly bonded to the P atom and wherein X is chalcogen (X may qualify as the required S, Se, or Te atom) (9/16; 9/165; 9/165A1)
 [List of Pre Grant Publications for class 987 subclass 210][List of Patents for class 987 subclass 210]210 Subclass 210 indent level is 2 Two or more P atoms (9/165A6; 9/165B)
 [List of Pre Grant Publications for class 987 subclass 211][List of Patents for class 987 subclass 211]211 Subclass 211 indent level is 2 Containing the structure P-(X-*acyl), P-(X-*Z) or P-(X-*cyano) wherein Z is other than C, H, or a salt forming moiety and * indicates a direct bond to the adjacent X atom (9/165A9; 9/165A9+M; 9/165A9+Q; 9/165A9+U)
[List of Pre Grant Publications for class 987 subclass 212][List of Patents for class 987 subclass 212]212 Subclass 212 indent level is 2 Containing the structure P-(X-aryl ring) (9/18)
 [List of Pre Grant Publications for class 987 subclass 214][List of Patents for class 987 subclass 214]214 Subclass 214 indent level is 2 Containing the structure P-(X-carbocyclic ring) (9/177)
 [List of Pre Grant Publications for class 987 subclass 215][List of Patents for class 987 subclass 215]215 Subclass 215 indent level is 2 Containing the structure P-(X-ethylenic group) (9/173)
 [List of Pre Grant Publications for class 987 subclass 216][List of Patents for class 987 subclass 216]216 Subclass 216 indent level is 2 Containing the structure P-(X-unsubstituted alkyl) wherein all of the X atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/17)
[List of Pre Grant Publications for class 987 subclass 217][List of Patents for class 987 subclass 217]217 Subclass 217 indent level is 1 P is trivalent and contains the structure P-(O-C) or P-(O-Z) where Z is an atom other than H (9/141; 9/141A1)
 [List of Pre Grant Publications for class 987 subclass 218][List of Patents for class 987 subclass 218]218 Subclass 218 indent level is 2 Containing the structure P-(O-*acyl), P-(O-*Z) wherein Z is an atom, other than C, H, or a salt former, or P-(O-*cyano) where * indicates a direct bond to the adjacent oxygen atom (9/141A9; 9/09A9+Q; 9/09A9+U)
[List of Pre Grant Publications for class 987 subclass 219][List of Patents for class 987 subclass 219]219 Subclass 219 indent level is 2 Containing the structure P-(O-carbocyclic ring) (9/145)
 [List of Pre Grant Publications for class 987 subclass 222][List of Patents for class 987 subclass 222]222 Subclass 222 indent level is 2 Containing the structure P-(O-ethylenic group) (9/143)
 [List of Pre Grant Publications for class 987 subclass 223][List of Patents for class 987 subclass 223]223 Subclass 223 indent level is 2 Containing the structure P-(O-unsubstituted alkyl) wherein all of th O atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/142)
[List of Pre Grant Publications for class 987 subclass 224][List of Patents for class 987 subclass 224]224 Subclass 224 indent level is 1 P is pentavalent and contains the structure P-(O-C) or P-(O-Z) where Z indicates an atom other than H (9/09; 9/09A1)
 [List of Pre Grant Publications for class 987 subclass 225][List of Patents for class 987 subclass 225]225 Subclass 225 indent level is 2 Containing the structure P-(O-*acyl), P-(O-*Z) wherein Z is an atom other than C or H, or P-(O*cyano) where * indicates a direct bond to the adjacent oxygen atom (9/09A9; 9/09A9+Q; 9/09A9+U)
[List of Pre Grant Publications for class 987 subclass 226][List of Patents for class 987 subclass 226]226 Subclass 226 indent level is 2 Contains two or more P atoms (9/09B)
[List of Pre Grant Publications for class 987 subclass 228][List of Patents for class 987 subclass 228]228 Subclass 228 indent level is 2 Containing the structure P-(O-carbocyclic ring) (9/12)
 [List of Pre Grant Publications for class 987 subclass 231][List of Patents for class 987 subclass 231]231 Subclass 231 indent level is 2 Containing the structure P-(O-ethylenic group) (9/113)
 [List of Pre Grant Publications for class 987 subclass 232][List of Patents for class 987 subclass 232]232 Subclass 232 indent level is 2 Containing the structure P-(O-unsubstituted alkyl) wherein all of the O atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/11)
 [List of Pre Grant Publications for class 987 subclass 233][List of Patents for class 987 subclass 233]233 Subclass 233 indent level is 2 Alchohol moiety of ester contains at least three hydroxyl functions or derivatives thereof and wherein the oxygen atoms of the derivative can be attributed to the hydroxyl functions; e.g., phosphatides, lecithin, etc. (9/10)
 [List of Pre Grant Publications for class 987 subclass 234][List of Patents for class 987 subclass 234]234 Subclass 234 indent level is 1 Reaction products of at least one compound containing both P and S atoms with a hydrocarbon or the reaction product of a P an a S reactant with a hydrocarbon (reactant P and S can be in elemental or compound form) (9/04)
[List of Pre Grant Publications for class 987 subclass 300][List of Patents for class 987 subclass 300]300 COMPOUND CONTAINS BOTH A PHOSPHORUS AND A METAL ATOM (9/02A)
 [List of Pre Grant Publications for class 987 subclass 301][List of Patents for class 987 subclass 301]301 Subclass 301 indent level is 1 Compound contains at least one atom of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Tc, or Re (9/02E)
 [List of Pre Grant Publications for class 987 subclass 302][List of Patents for class 987 subclass 302]302 Subclass 302 indent level is 1 Compound contains at least one atom of Al, Ga, In, Tl, Ge, Sn, or Pb (9/02D)
 [List of Pre Grant Publications for class 987 subclass 303][List of Patents for class 987 subclass 303]303 Subclass 303 indent level is 1 Compound contains at least one atom of Cu, Zn, Ag, Cd, Au, or Hg (9/02C)
 [List of Pre Grant Publications for class 987 subclass 304][List of Patents for class 987 subclass 304]304 Subclass 304 indent level is 1 Compound contains at least one atom of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, or Pt (9/02B)
[List of Pre Grant Publications for class 987 subclass 350][List of Patents for class 987 subclass 350]350 PHOSPHORUS CONTAINING AT LEAST ONE NITROGEN ATOM AS SOLE HETERO ATOM (9/65)
 [List of Pre Grant Publications for class 987 subclass 351][List of Patents for class 987 subclass 351]351 Subclass 351 indent level is 1 Ring contains at least four nitrogen atoms (9/65D; 9/65D1; 9/65D2; 9/65D3; 9/65D3B)
[List of Pre Grant Publications for class 987 subclass 352][List of Patents for class 987 subclass 352]352 Subclass 352 indent level is 1 Ring contains three nitrogen atoms (9/65C)
 [List of Pre Grant Publications for class 987 subclass 353][List of Patents for class 987 subclass 353]353 Subclass 353 indent level is 2 Six-membered ring contains the three N atoms (9/65C6; 9/65C6E; 9/65C6G; 9/65C6K; 9/65C6Q; 9/65C6R; 9/65C6V)
 [List of Pre Grant Publications for class 987 subclass 354][List of Patents for class 987 subclass 354]354 Subclass 354 indent level is 2 Five-membered ring contains the three N atoms (9/65C5; 9/65C5E; 9/65C5G; 9/65C5K; 9/65C5R; 9/65C5V)
[List of Pre Grant Publications for class 987 subclass 355][List of Patents for class 987 subclass 355]355 Subclass 355 indent level is 1 Ring contains two N atoms (9/65B)
[List of Pre Grant Publications for class 987 subclass 356][List of Patents for class 987 subclass 356]356 Subclass 356 indent level is 2 Six-membered ring (9/65B6)
[List of Pre Grant Publications for class 987 subclass 360][List of Patents for class 987 subclass 360]360 Subclass 360 indent level is 2 Five-membered ring (9/65B5)
[List of Pre Grant Publications for class 987 subclass 363][List of Patents for class 987 subclass 363]363 Subclass 363 indent level is 1 Ring contains a single N atom (9/65A)
 [List of Pre Grant Publications for class 987 subclass 364][List of Patents for class 987 subclass 364]364 Subclass 364 indent level is 2 (O=)C-N-C(=O) group where C-N-C is part of the ring (9/65A9)
 [List of Pre Grant Publications for class 987 subclass 365][List of Patents for class 987 subclass 365]365 Subclass 365 indent level is 2 Ring contains at least seven ring atoms (9/65A7)
 [List of Pre Grant Publications for class 987 subclass 366][List of Patents for class 987 subclass 366]366 Subclass 366 indent level is 2 Six-membered ring (9/65A6; 9/65A6E; 9/65A6G; 9/65A6J; 9/65A6K; 9/65A6K2; 9/65A6K4; 9/65A6M; 9/65A6R; 9/65A6V)
 [List of Pre Grant Publications for class 987 subclass 367][List of Patents for class 987 subclass 367]367 Subclass 367 indent level is 2 Five-membered ring (9/65A5; 9/65A5E; 9/65A5G; 9/65A5J; 9/65A5K; 9/65A5K2; 9/65A5K4; 9/65A5M; 9/65A5R; 9/65A5V)
 [List of Pre Grant Publications for class 987 subclass 368][List of Patents for class 987 subclass 368]368 Subclass 368 indent level is 2 Four-membered ring (9/65A4; 9/65A4E; 9/65A4V)
 
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