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Class Information
Number: 71/43
Name: Chemistry: fertilizers > Processes and products > Inorganic material > Phosphorus-containing > Phosphates > Neutralization
Description: Methods directed to the neutralization of an acidic or basic material by treatment with a reagent which will accomplish the neutralization.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7175683 |
Process for transforming sludge into NPK type granulated fertilizer |
Feb. 13, 2007 |
| 6042629 |
Fertilizer from brewery cleaning and rinsing solutions |
Mar. 28, 2000 |
| 5824132 |
Method of phosphoric acid concentration |
Oct. 20, 1998 |
| 5385596 |
Treating of agricultural soil |
Jan. 31, 1995 |
| 5378258 |
Method and an installation for producing granulated triple superphosphate (TSP) |
Jan. 3, 1995 |
| 5308372 |
Vegetable oil processing to obtain nutrient by-products |
May. 3, 1994 |
| 5211735 |
Process for preparing phosphated or nitrophosphated fertilizers through solubilization of phosphate rock |
May. 18, 1993 |
| 5158594 |
Granulated nitrogen-phosphorus-potassium-sulfur fertilizer from waste gypsum slurry |
Oct. 27, 1992 |
| 5028252 |
Method of and composition for the fertilization, detoxification and deacidification of soil |
Jul. 2, 1991 |
| 5022913 |
Stabilized ammonium orthophosphate suspensions |
Jun. 11, 1991 |
| 5019148 |
Homogeneous mineral granules by acid-base reaction |
May. 28, 1991 |
| 4932993 |
Batch production of suspension fertilizers using lignosulfonate |
Jun. 12, 1990 |
| 4867930 |
Priller method |
Sep. 19, 1989 |
| 4836843 |
Fertilizer process |
Jun. 6, 1989 |
| 4834787 |
Phosphate rock utilization |
May. 30, 1989 |
| 4832928 |
Method for producing ammonium polyphosphate |
May. 23, 1989 |
| 4792349 |
Fertilizer values from galvanizer waste |
Dec. 20, 1988 |
| 4758261 |
Diammonium phosphate produced with a high-pressure pipe reactor |
Jul. 19, 1988 |
| 4744965 |
Process for producing granular diammonium phosphate |
May. 17, 1988 |
| 4721519 |
Stable ammonium polyphosphate liquid fertilizer from merchant grade phosphoric acid |
Jan. 26, 1988 |
| 4687651 |
Method for producing ammonium polyphosphate |
Aug. 18, 1987 |
| 4652295 |
Fertilizer manufacture |
Mar. 24, 1987 |
| 4650682 |
Acidifier-ammoniator |
Mar. 17, 1987 |
| 4637921 |
Process for producing ammonium polyphosphate |
Jan. 20, 1987 |
| 4634533 |
Method of converting brines to useful products |
Jan. 6, 1987 |
| 4619684 |
Pressure reactor for producing diammonium phosphate |
Oct. 28, 1986 |
| 4604126 |
NP/NPK fertilizer granules comprised of ammonium phosphate |
Aug. 5, 1986 |
| 4601891 |
Production of granular ammonium polyphosphate from wet-process phosphoric acid |
Jul. 22, 1986 |
| 4592771 |
Method of producing di-ammonium phosphate fertilizer |
Jun. 3, 1986 |
| 4576627 |
Method of providing fertilizer from brines |
Mar. 18, 1986 |
| 4537615 |
Fertilizer from phosphorus furnace waste stream |
Aug. 27, 1985 |
| 4536378 |
Phosphate fertilizer production |
Aug. 20, 1985 |
| 4522638 |
Method and apparatus for regulating the NH.sub.3 content in scrubbing liquid used in a gas scrubbing process |
Jun. 11, 1985 |
| 4512793 |
Granulation of urea phosphate from urea and merchant-grade phosphoric acid |
Apr. 23, 1985 |
| 4511389 |
Manufacturing and using nitrogen fertilizer solutions on a farm |
Apr. 16, 1985 |
| 4511388 |
Production of high-analysis ammonium orthophosphate suspension fertilizers by a new batch-type process |
Apr. 16, 1985 |
| 4505733 |
Process for producing liquid combined fertilizers |
Mar. 19, 1985 |
| 4500502 |
Process for removing impurities from wet process of phosphoric acid |
Feb. 19, 1985 |
| 4493820 |
Process for partial removing of impurities from a wet process phosphoric acid |
Jan. 15, 1985 |
| 4479923 |
Production of phosphoric acid and additional products from phosphate ore |
Oct. 30, 1984 |
| 4475940 |
Method of converting waste dross to fertilizer |
Oct. 9, 1984 |
| 4469504 |
Process for the partial solubilization of phosphate rock and obtaining acid and phosphate fertilizers therefrom |
Sep. 4, 1984 |
| T104501 |
Production of high-analysis ammonium orthophosphate suspension fertilizers by a new batch-type process |
Aug. 7, 1984 |
| 4457773 |
Magnesium phosphate fluid fertilizer |
Jul. 3, 1984 |
| 4451277 |
Production of fluid fertilizer from phosphorus furnace waste stream |
May. 29, 1984 |
| T104201 |
Pressure reactor for producing diammonium phosphate |
May. 1, 1984 |
| 4445926 |
Process for blending phosphoric acids of differing impurity content |
May. 1, 1984 |
| 4442081 |
Process for producing a stabilized phosphoric acid |
Apr. 10, 1984 |
| 4427433 |
Production of granular ammonium-polyphosphate with an inline reactor and drum granulator |
Jan. 24, 1984 |
| 4420321 |
Process for removal of carbon black floc associated with wet-process phosphoric acid in the production of fertilizers |
Dec. 13, 1983 |
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