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| Class 540 | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| This Class 540 is considered to be an integral part of Class 260 (see the Class 260 schedule for the position of this Class in schedule hierarchy). This Class retains all pertinent definitions and class lines of Class 260. | ||
| ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) |
![[List of Pre Grant Publications for class 540 subclass 1]](../as.gif) | ![[List of Patents for class 540 subclass 1]](../ps.gif) | 1 |  HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS |
| | 2 |  Cyclopentanohydrophenanthrene ring system containing |
| | 3 |  Heavy metal or aluminum containing |
| | 4 | Boron or silicon containing |
| | 5 | Phosphorus attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding |
| | 6 | Spiro |
| | 7 |  Plural spiro atoms |
| | 8 |  The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos |
| | 10 | The cyclopentanohydrophenanthrene ring system shares spiro atoms with two hetero rings, each of which contains two oxygens (e.g., 3,17-bis-ketals, etc.) |
| | 11 | The cyclopentanohydrophenanthrene ring system shares a spiro atom with a lactone ring (i.e., -C(=X)-O- is part of the ring, wherein X is chalcogen) |
| | 12 | Plural oxygens in both rings which share a spiro atom (e.g., 17,20;20,21 bismethylenedioxy-pregnanes, etc.) |
| | 15 | The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos |
| | 16 | Hetero ring is one of the cyclos of the polycyclo ring system |
| | 17 |  The hetero ring is five-membered, consisting of one oxygen and four carbons, and shares the spiro atom with a six-membered oxygen containing hetero ring (e.g., sapogenins, etc.) |
| | 18 |  Purification or recovery |
| | 19 | Chalcogen bonded directly at the 12-position of the cyclopentanohydrophenanthrene ring system (e.g., hecogenin, etc.) |
| | 20 | Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system |
| | 22 | Halogen, cyano, nitrogen or sulfur bonded directly to the cyclopentanohydrophenanthrene ring system |
| | 23 | The spiro atom is the 17-position carbon of the cyclopentanohydrophenanthrene ring system |
| | 24 | The hetero ring shares the 11,12,13-positions of the cyclopentanohydrophenanthrene ring system (i.e., bridged; e.g., 11,18-oxido steroids, etc.) |
| | 25 | The hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.) |
| | 27 | The hetero ring contains two chalcogens which are bonded directly at the 16 and 17-positions of the cyclopentanohydrophenanthrene ring system |
| | 28 | The spiro includes the cyclopentanohydrophenanthrene ring system and a hetero ring |
| | 29 | Nitrogen in the spiro hetero ring |
| | 30 | Sulfur in the spiro hetero ring |
| | 31 | Plural oxygens in the spiro hetero ring |
| | 32 | The A ring is a benzene ring |
| | 33 | Chalcogen bonded directly to the spiro hetero ring |
| | 34 | The spiro hetero ring shares the 3-position carbon of the cyclopentanohydrophenanthrene ring system |
| | 35 | Halogen bonded directly to the cyclopentanohydrophenanthrene ring system |
| | 36 | Nitrogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding |
| | 37 | Plural cyclic ketal rings containing (e.g., 3,20-bis-ketals, etc.) |
| | 38 | Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system |
| | 39 | The cyclopentanohydrophenanthrene ring system is fully saturated |
| | 40 | Carbon chain having carbon-to-carbon unsaturation bonded directly at the 17 position of the cyclopentanohydrophenanthrene ring system |
| | 41 | The spiro hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., spiro-lactones, etc.) |
| | 42 | Sulfur bonded directly to the cyclopentanohydrophenanthrene ring system |
| | 43 | Chalcogen bonded directly at the 11-position of the cyclopentanohydrophenanthrene ring system |
| | 44 | Chalcogen, halogen, or nitrogen attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding |
| | 45 | The spiro hetero ring is four-membered consisting of one oxygen and three carbons |
| | 46 | The spiro hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.) |
| | 47 | The cyclopentanohydrophenanthrene ring system is part of a polycyclo ring system having at least five cyclos |
| | 48 | Hetero ring is one of the cyclos of the polycyclo ring system |
| | 49 | The hetero ring contains nitrogen |
| | 50 | Plural nitrogens in the hetero ring |
| | 51 | The hetero ring is five-membered |
| | 52 |  The hetero ring consists of two nitrogens and three carbons and is ortho fused to the A ring |
| | 53 |  Having -C(=X)-, wherein X is chalcogen, bonded directly at the 17-position of the cyclopentanohydrophenanthrene ring system |
| | 54 | The hetero ring consists of two nitrogens and three carbons and is ortho fused to the D ring |
| | 55 | Chalcogen in the hetero ring |
| | 58 | The hetero ring is five-membered |
| | 59 | The hetero ring contains sulfur |
| | 61 | The hetero ring contains plural oxygens |
| | 62 | Two of the cyclos share at least three ring members or a ring carbon is shared by three of the cyclos (e.g., bridged, peri-fused, etc.) |
| | 63 | The hetero ring is ortho-fused to the D ring |
| | 64 | At least six cyclos in the polycyclo ring system |
| | 65 | Nitrogen or acyclic chalcogen bonded directly to the hetero ring (e.g., cyclic carbonates, etc.) |
| | 66 | The A ring is a benzene ring |
| | 67 | Sulfur or nitrogen attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding |
| | 68 | Halogen attached indirectly to the cyclopentanohydrophenanthrene ring system by acyclic nonionic bonding |
| | 69 | Halogen bonded directly to the cyclopentanohydrophenanthrene ring system |
| | 71 | Oxygen attached directly to the B ring or indirectly to the A or B ring by acyclic nonionic bonding |
| | 72 | The hetero ring is a lactone (i.e., containing -C(=X)-O- as part of the ring, wherein X is chalcogen) |
| | 73 | The lactone ring shares at least three ring members with one other cyclo of the polycylo ring system (i.e., bridged) |
| | 74 | The lactone ring shares the 11,12,13-positions of the cyclopentanohydrophenanthrene ring system (e.g., 11, 18-lactones, etc.) |
| | 75 | The lactone ring shares a ring carbon with two other cyclos of the polycyclo ring system (e.g., peri-fused, etc.) |
| | 76 | The hetero ring is three-membered consisting of one oxygen and two carbons (e.g., oxirane, etc.) |
| | 77 | The polycyclo ring system contains plural oxirane rings |
| | 78 | The hetero ring shares the 1,2-positions of the cyclopentanohydrophenanthrene ring system |
| | 79 | The hetero ring shares the 4,5-positions of the cyclopentanohydrophenanthrene ring system |
| | 80 | The hetero ring shares the 5,6-positions of the cyclopentanohydrophenanthrene ring system |
| | 81 | The hetero ring shares the 6,7-positions of the cyclopentanohydrophenanthrene ring system |
| | 82 | The hetero ring shares the 11,12-positions of the cyclopentanohydrophenanthrene ring system |
| | 83 | The hetero ring shares the 14,15-positions of the cyclopentanohydrophenanthrene ring system |
| | 84 | The hetero ring shares the 16,17-positions of the cyclopentanohydrophenanthrene ring system |
| | 87 | The hetero ring shares the 9,11-positions of the cyclopentanohydrophenanthrene ring system |
| | 90 | The hetero ring shares at least three ring members with one other cyclo of the polycyclo ring system (i.e., bridged) |
| | 91 | Bridge consisting of oxygen and carbon between the 6- and 10-positions of the cyclopentanohydrophenanthrene ring system (e.g., 6,19-oxido steroids, etc.) |
| | 92 | Bridge consisting of oxygen and carbon between the 11- and 13-positions of the cyclopentanohydrophenanthrene ring system (e.g., 11,18-oxido steroids, etc.) |
| | 93 | The hetero ring shares a ring carbon with two other cyclos of the polycyclo ring system (e.g., peri-fused, etc.) |
| | 94 | Hetero ring attached directly to the cyclopentanohydrophenanthrene ring system by nonionic bonding |
| | 95 | The hetero ring contains nitrogen |
| | 96 | Plural nitrogen containing hetero rings bonded directly to the cyclopentanohydrophenanthrene ring system |
| | 97 | The hetero ring is bonded directly at the 3-position of the cyclopentanohydrophenanthrene ring system |
| | 100 | The hetero ring contains plural chalcogens |
| | 101 | The hetero ring and acyclic chalcogen are both bonded directly at the 17 position of the cyclopentanohydrophenanthrene ring system |
| | 102 | The hetero ring contains -C(=X)-O-, wherein X is chalcogen, as part of the ring (e.g., lactones, etc.) |
| | 103 | Additional chalcogen, cyano, or -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring |
| | 104 | Nitrogen or sulfur attached directly or indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding |
| | 105 | Chalcogen bonded directly at the 14-position of the cyclopentanohydrophenanthrene ring system or double bond in the D ring (e.g., cardenolides, etc.) |
| | 106 | Nitrogen attached directly to the cyclopentanohydrophenanthrene ring system by nonionic bonding |
| | 107 | Nitrogen containing hetero ring attached indirectly to the cyclopentanohydrophenanthrene ring system by nonionic bonding |