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Class Information
Number: 71/32
Name: Chemistry: fertilizers > Processes and products > Inorganic material > Phosphorus-containing
Description: Methods and products in which the fertilizer contains P.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7588744 |
Method of recovering phosphate for reuse as a fertilizer |
Sep. 15, 2009 |
| 7534281 |
Organic recycling with a pipe-cross or tubular reactor |
May. 19, 2009 |
| 7487927 |
Fertilizing system and method by extracting nitrogen compounds from combustion exhaust gases |
Feb. 10, 2009 |
| 7485171 |
Use of solid-phase buffer to improve plant cultivation |
Feb. 3, 2009 |
| 7468087 |
Fertilizer, process for producing the same, process for controlling inorganizing speed of urea/aliphatic aldehyde condensation product, and process for growing crops |
Dec. 23, 2008 |
| 7452398 |
Phosphate and potash(PK)-containing compound fertilizer |
Nov. 18, 2008 |
| 7402190 |
Method for making formulated nitrogenous and complex fertilizer in highly homogenized spherical granule form starting from urea-formaldehyde liquid resins and the fertilizer made thereby |
Jul. 22, 2008 |
| 7160349 |
Formulation of phosphorus fertilizer for plants |
Jan. 9, 2007 |
| 7160350 |
Formulation of phosphorus fertilizer for plants |
Jan. 9, 2007 |
| 7108732 |
Process for producing fertilizer comprising sparingly water-soluble phosphatic fertilizer, urea/aliphatic aldehyde condensation product and water-repellent substance |
Sep. 19, 2006 |
| 6994850 |
Method for preparing a biological fertilizer composition comprising swine manure |
Feb. 7, 2006 |
| 6979444 |
Method for preparing a biological fertilizer composition comprising poultry manure |
Dec. 27, 2005 |
| 6929673 |
Formulation of phosphorus fertilizer for plants |
Aug. 16, 2005 |
| 6908495 |
Low oxygen organic waste bioconversion system |
Jun. 21, 2005 |
| 6896714 |
Formulation of phosphorus fertilizer for plants |
May. 24, 2005 |
| 6858058 |
Fertilizer with excess free sequestering agents |
Feb. 22, 2005 |
| 6824584 |
Ammonium phosphate/phosphite fertilizer compound |
Nov. 30, 2004 |
| 6770593 |
Fertilizer |
Aug. 3, 2004 |
| 6749659 |
Controlled release rate fertilizers and methods of making same |
Jun. 15, 2004 |
| 6733560 |
Water soluble complex fertilizers, method for their preparation and related use |
May. 11, 2004 |
| 6695892 |
Organic fertilizer having humic properties its method of production and its use |
Feb. 24, 2004 |
| 6645268 |
Formulation of phosphorus fertilizer for plants |
Nov. 11, 2003 |
| 6566304 |
Biogenic control and limitation of the reproduction of parasitic earth nematodes in stock culture |
May. 20, 2003 |
| 6558445 |
Dry fertilizer compositions and method for making the same |
May. 6, 2003 |
| 6540808 |
Controlled release fertilizers based on self-assembled molecule coatings |
Apr. 1, 2003 |
| 6541421 |
Buffered phosphorus containing solution |
Apr. 1, 2003 |
| 6537340 |
Process for recycling materials used in water treatment |
Mar. 25, 2003 |
| 6490826 |
Methods of utilizing a finely divided mineral composite |
Dec. 10, 2002 |
| 6488735 |
Fertilizer compound having a glass matrix |
Dec. 3, 2002 |
| 6432155 |
Compositions containing phosphate and xanthan gum variants |
Aug. 13, 2002 |
| 6391080 |
Phosphate, phosphatic fertilizers manufacturing process |
May. 21, 2002 |
| 6391079 |
Fertilizer with a chelate element |
May. 21, 2002 |
| 6391238 |
Method of producing algae cultivating medium |
May. 21, 2002 |
| 6387146 |
Granular fertilizer for plants containing a type of mycorrhizal fungus |
May. 14, 2002 |
| 6346131 |
Fertilizer compositions for administering phosphates to plants |
Feb. 12, 2002 |
| 6293047 |
Finely divided mineral composite, and methods of making and utilizing same |
Sep. 25, 2001 |
| 6287357 |
Solid-phase phosphorus buffer for sustained, low-leaching phosphorus fertilization of field-grown plants |
Sep. 11, 2001 |
| 6241795 |
Soluble fertilizer formulation |
Jun. 5, 2001 |
| 6207615 |
Lawn fertilizer for canine waste damage |
Mar. 27, 2001 |
| 6168643 |
Inorganic phosphorus fertilizer |
Jan. 2, 2001 |
| 6113665 |
Formulation of phosphorus fertilizer for plants |
Sep. 5, 2000 |
| 6045810 |
Reinforced-resin coated plant food granules |
Apr. 4, 2000 |
| 6036740 |
Concentrated gypsum slurries for use in drip irrigation |
Mar. 14, 2000 |
| 5997599 |
Soil conditioning agglomerates containing cement kiln dust |
Dec. 7, 1999 |
| 5942021 |
System for administration of nutrients to plants |
Aug. 24, 1999 |
| 5907925 |
Method for treatment of waste material |
Jun. 1, 1999 |
| 5865870 |
Continuous release phosphorus fertilizer |
Feb. 2, 1999 |
| 5849060 |
Controlled release fertilizer and preparations thereof |
Dec. 15, 1998 |
| 5830255 |
Formulation of phosphorus fertilizer for plants |
Nov. 3, 1998 |
| 5770787 |
Nutrient status of plants in soils |
Jun. 23, 1998 |
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