Chemistry: fertilizers > Patents

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Class Information
Number: 71
Name: Chemistry: fertilizers >
Description: This class is directed to methods of production and manufacture of substances having a nutrient action on plant growth. It also includes the products of such methods and compositions or mixtures having these characteristics, and forms of chemical compounds or mixtures peculiarly adapted and designed to make them more available for use and distribution as a fertilizer.

Class Number	Class Name	No. of Patents
71/DIG.4	Anti-corrosion	16
71/904	Carrier	142
71/DIG.2	Chelating agent	79
71/DIG.3	Defluorination	11
71/900	Foams	15
71/902	Nitrification inhibition	65
71/1	Processes and products	86
71/6	Bacterial	126
71/8	Fermentation	56
71/9	Aerobic	280
71/10	Anaerobic	102
71/7	Nitrogen fixing or nitrifying	82
71/5	For mushrooms	63
71/64.01	Forms or conditioning	44
71/64.12	Anticaking	75
71/64.02	Coating and granulating	73
71/64.07	Coating	187
71/64.11	Controlled release	294
71/64.13	Forms having structure, e.g., particle size, dimensions, etc.	205
71/64.09	Gel	31
71/64.03	Granulating	80
71/64.05	By agglomerating	59
71/64.04	By comminuting	33
71/64.06	By fluid contact	46
71/64.1	Liquid	211
71/64.08	Slurry or suspension	129
71/31	Inorganic material	135
71/61	Alkali metal or ammonium	126
71/63	Carbonates, oxides, sulfates, halides, etc.	233
71/54	Nitrogen-containing (except ammonium)	59
71/55	Cyanamide	7
71/57	Alkali metal or ammonium-containing	16
71/56	Nitrogen-containing (except ammonium)	9
71/58	Nitrates	68
71/59	With alkali metal or ammonium compound	89
71/60	With carbonates, oxides, sulfates, or halides	48
71/32	Phosphorus-containing	81
71/33	Phosphates	105
71/37	Acid treatment	35
71/41	Acids of phosphorus	54
71/38	Gaseous	3
71/39	Nitric and hydrochloric	18
71/40	Sulfuric acid	39
71/34	Alkali metal and ammonium only	186
71/36	Alkali metal- and ammonium-containing	57
71/35	Nitrogen-containing	32
71/42	Alkaline treatment	17
71/44	Heat-treatment	21
71/45	Alkali metal and silicon values	5
71/46	Alkali metal values	3
71/47	Carbonates, oxides, sulfates, silicon, and halides	12
71/43	Neutralization	108
71/48	Products	16
71/51	Alkali metal- and ammonium-containing	33
71/53	Containing carbonates, oxides, sulfates, or halides	55
71/49	Nitrogen-containing	17
71/50	Nitrates	20
71/52	Silicon-containing	10
71/62	Silicon-containing	57
71/11	Organic material-containing	249
71/15	From animal matter	132
71/17	Blood	16
71/19	Bone	18
71/20	With other organic matter	15
71/21	Guano, stable manure, etc.	139
71/18	Horn, hair, feathers, wool, leather, etc.	16
71/16	Marine animals	42
71/22	With other organic material	34
71/14	From garbage	76
71/25	From industrial wastes	117
71/26	Sugar or distillery	42
71/12	From sewage or night soil	147
71/13	With other organic material	113
71/27	From synthetic material	277
71/28	Urea and its derivatives	347
71/30	With nitrogen-containing substances	159
71/29	With phosphorus-containing substances	174
71/23	From vegetation	194
71/24	Peat, humus material, coal, etc.	167
71/901	Refuse conditioning	61
71/903	Soil conditioner	290