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| Class 516 | COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF |
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| This Class 516 is considered to be an integral part of Class 252 (see the Class 252 schedule for the position of this Class in schedule hierarchy). This Class retains all pertinent definitions and class lines of Class 252. | ||
![[List of Pre Grant Publications for class 516 subclass 1]](../as.gif) | ![[List of Patents for class 516 subclass 1]](../ps.gif) | 1 | CONTINUOUS GAS OR VAPOR PHASE: COLLOID SYSTEMS; COMPOSITIONS CONTAINING AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., SMOKE, FOG, AEROSOL, CLOUD, MIST) |
| | 2 |  Discontinuous phase formed by combustion or oxidation/reduction reaction (e.g., smudge-pot smoke) |
| | 4 | Discontinuous phase formed by hydrolysis step (e.g., metal oxide from metal chloride/water reaction) |
| | 5 | Steam present |
| | 6 | Discontinuous phase primarily liquid (e.g., mist, fog) |
| | 9 | CONTINUOUS LIQUID OR SUPERCRITICAL PHASE: COLLOID SYSTEMS; COMPOSITIONS AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., MICELLE; THICKENING AGENT; PROTECTIVE COLLOID AGENT; COMPOSITION CONTAINING AN EMULSIFYING AGENT WITH NO DISPERSANT DISCLOSED; ORGANIC LIQUID EMULSIFIED IN ANHYDROUS HF) |
| | 10 | Having discontinuous gas or vapor phase, e.g., foam: |
| | 11 |  With particulate solid |
| | 12 | The agent contains organic compound containing halogen |
| | 13 | The agent contains organic compound containing phosphorus or silicon |
| | 14 | The agent contains organic compound containing sulfoxy* |
| | 15 | The agent contains organic compound containing nitrogen, except if present solely as NH4+ |
| | 17 |  The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene) |
| | 18 | The agent contains organic compound containing oxygen |
| | 20 | Primarily organic continuous liquid phase (e.g., organic liquid emulsified in an organic liquid) |
| | 21 | Discontinuous phase primarily inorganic liquid (e.g., water-in-oil emulsion, w/o) |
| | 22 | Three or more phases (e.g., w/o emulsion also containing solid particle suspension) |
| | 23 | The agent contains organic compound containing silicon |
| | 24 | The agent contains organic compound containing phosphorus (e.g., lecithin) |
| | 25 | The agent contains organic compound containing sulfoxy* |
| | 27 | The agent contains organic compound containing nitrogen, except if present solely as NH4+ |
| | 28 | The agent contains organic compound containing oxygen |
| | 31 | Discontinuous phase material primarily solid or semisolid (e.g., colloid- sized dispersion of gel particles, or paraffin wax, or polytetrafluoroethylene) |
| | 32 | The material primarily contains elemental carbon (e.g., graphite, diamond) |
| | 33 | The material primarily contains inorganic material (e.g., chrome yellow, sodium nitrite) |
| | 35 |  The inorganic material primarily contains elemental alkali metal or primarily contains an alloy which primarily contains elemental alkali metal (e.g., sodium) |
| | 36 | The inorganic material primarily contains antimony oxide |
| | 37 | The inorganic material primarily contains elemental sulfur |
| | 38 | Aqueous continuous liquid phase and discontinuous phase primarily coal or elemental carbon or bituminous (e.g., asphalt, pitch, tar, montan wax, paraffin wax) |
| | 39 | The agent is formed in situ from native precursor by adding inorganic alkaline material (e.g., NaOH or TSP added to in situ acid) |
| | 40 | The agent contains organic compound containing phosphorus |
| | 41 | The agent contains organic compound containing sulfoxy* |
| | 43 | The agent contains organic compound containing nitrogen, except if present solely as NH4+ |
| | 45 | The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene) |
| | 46 | The agent contains organic compound containing oxygen |
| | 47 | The compound contains -C(=O)OH or salt thereof (e.g., soap, rosin, fatty acid) |
| | 50 | With added solid non-bituminous particulate |
| | 51 | The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene) |
| | 52 | The agent contains specified solid non-bituminous particulate (e.g., clay) |
| | 53 | Aqueous continuous liquid phase and discontinuous phase primarily organic liquid (e.g., organosilicon* oil- or mineral-oil*-in-water, o/w emulsion) |
| | 54 | Three or more liquid phases (e.g., water-in-oil-in-water, w/o/w emulsion) |
| | 55 | The agent contains organic compound containing silicon |
| | 56 | The agent contains organic compound containing phosphorus (e.g., lecithin) |
| | 58 | The agent contains organic compound containing sulfoxy* (e.g., sodium lauryl sulfate) |
| | 59 | The compound contains nitrogen, except if present solely as NH4+ (e.g., isopropylammonium dodecylbenzene sulfonate) |
| | 60 | The nitrogen is a ring member |
| | 61 | The compound contains -S(O2)NHH where substitution may be made for the hydrogen |
| | 62 | The compound contains -C(=O)NHH where substitution may be made for the hydrogen |
| | 63 | The compound contains carboxylic acid ester group (e.g., partial ester, mixed ester) |
| | 64 | The compound contains -C(=O)OH or salt thereof |
| | 65 | The compound is mineral-oil* sulfonic acid (e.g., mahogany* or green* acid) |
| | 66 | The compound contains substituted or unsubstituted benzene ring (e.g., di-butyl-naphthalene sulfonic acid) |
| | 67 | The agent contains organic compound containing nitrogen, except if present solely as NH4+ |
| | 68 | The nitrogen is a ring member (e.g., polyisocyanurate) |
| | 69 | The compound contains -C(=O)NHH where substitution may be made for the hydrogen |
| | 71 | The compound contains repeating -(OCnHn)- (i.e., repeating unsubstituted oxyalkylene) |
| | 72 | The agent contains organic compound containing oxygen |
| | 73 | The compound contains carboxylic acid ester group (e.g., partial ester, natural (glyceride) oil) |
| | 74 | The carboxylic acid ester group containing compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene) |
| | 75 | The compound contains -C(=O)OH or salt thereof (e.g., alkali metal soap) soap) |
| | 76 | The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene) |
| | 78 | The solid is primarily inorganic material (e.g., mercurous halide) |
| | 79 | The material primarily contains compound containing silicon covalently bonded to oxygen (e.g., aluminum silicate, clay) |
| | 80 | The material is a silica particle having a distinct layer containing non-monovalent metal oxide (e.g., alumina coated silica sol) |
| | 81 | The material is substantially pure silica sol |
| | 82 |  The silica is formed or grown by reaction of alkali silicate and non-siliceous inorganic acid (e.g., H2SO4) |
| | 83 | Ion exchange step occurs before or during growing or forming the sol |
| | 84 | Ion-exchange step employed in post-treatment (e.g., purification) |
| | 85 | Gel forming step (e.g., peptize) |
| | 86 | Hydrolysis step or elemental silicon source (e.g., forming fumed silica) |
| | 87 | Having colloid system stabilizing or preserving agent which is organic compound (e.g., deflocculant, antibacterial, esterification of unstable silicasols) |
| | 88 | The material primarily contains compound containing both metal and oxygen (e.g., silver nitrate) |
| | 89 | The metal present in the greatest amount is yttrium, scandium, or rare earth (e.g., hydrated ceric dioxide) |
| | 90 | The metal present in the greatest amount is titanium, zirconium, or hafnium |
| | 91 | The metal present in the greatest amount is antimony, bismuth, or arsenic |
| | 92 | The metal present in the greatest amount is tin, lead, or geranium (e.g., lead sulfate) |
| | 93 | The metal present in the greatest amount is aluminum |
| | 95 | The metal present in the greatest amount in the compounds is iron, nickel, or cobalt |
| | 96 | The material primarily contains elemental selenium, tellurium, or sulfur, or compound thereof (e.g., zinc sulfide) |
| | 97 | The material primarily contains elemental platinum group metal, copper, silver, or gold, or compound thereof |
| | 98 | CONTINUOUS OR SEMICONTINUOUS SOLID PHASE (I.E., SYSTEMS WHICH EXHIBIT PLASTICITY, ELASTICITY, OR RIGIDITY): COLLOID SYSTEMS; COMPOSITIONS CONTAINING AN AGENT FOR MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF MAKING OR STABILIZING COLLOID SYSTEMS; PROCESSES OF PREPARING THE COMPOSITIONS (E.G., GEL, PASTE, GELLED EMULSION, FLOC) |
| | 99 | The solid phase contains organic material |
| | 100 | The organic material coats, impregnates, or surface modifies solid inorganic material (e.g., dextrin modified clay) |
| | 101 | The organic material contains organic compound containing nitrogen, except if present solely as NH4+ |
| | 102 | The organic material contains organic compound containing nitrogen, except if present solely as NH4+ |
| | 104 | The organic material contains organic compound containing oxygen |
| | 105 | The compound is a carbohydrate* or carbohydrate-derivative* (e.g., mono- or polysaccharide) |
| | 106 | The compound is cellulose or derivative thereof (e.g., CMC) |
| | 107 | The compound is gum or derivative thereof |
| | 108 | The compound contains carboxylic acid ester group (e.g., glycerides) |
| | 109 | The compound contains -C(=O)OH or salt thereof (e.g., calcium stearate) |
| | 110 |