C05B 13/00
Fertilisers produced by pyrogenic processes from phosphatic materials
C05B13/00 (Fertilisers produced by pyrogenic processes from phosphatic materials) appears on 127 US grants and 81 published applications in this corpus.
Search patents in C05B- Granted patents
- 127
- Published applications
- 81
- Assignees
- 91
- Inventors
- 263
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 10 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 3 | 3 |
| 2011 | 1 | 3 |
| 2012 | 4 | 6 |
| 2013 | 3 | 5 |
| 2014 | 1 | 1 |
| 2015 | 7 | 7 |
| 2016 | 6 | 8 |
| 2017 | 2 | 2 |
| 2018 | 5 | 5 |
| 2019 | 3 | 6 |
| 2020 | 6 | 4 |
| 2021 | 4 | 2 |
| 2022 | 1 | 6 |
| 2023 | 2 | 5 |
| 2024 | 2 | 7 |
| 2025 | 5 | 2 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Nitrogen fertilizer compositions based on polyphosphate caged structure6 Oct 2026US 12,753,128 B2Agtec Innovations, Inc.
- Agglomerated dispersible granules, methods for amending soil, and activated alumina suspensions24 Feb 2026US 12,559,436 B2Phospholutions Inc.
- Method for manufacturing useful products containing carbonized solids by treating organic wastes containing heavy metals27 Jan 2026US 12,533,719 B2Matsui Consulting Firm Co., Ltd.
- Method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants16 Dec 2025US 12,497,340 B1Tianjin University
- Fertilizer compositions16 Dec 2025US 12,497,343 B2Glaze Coatings Limited
- Mineral phosphate ash based fertilizer containing magnesium, produced from sewage sludge ash, and process for the production thereof8 Oct 2026US 2026/0308076 A1
- A method for producing ferrous sulphate and phosphoric acid12 Mar 2026US 2026/0070788 A1Kemira Oyj
- Compacted muriate of potash fertilizers containing micronutrients and methods of making same15 Jan 2026US 2026/0015296 A1The Mosaic Company
- Method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants18 Dec 2025US 2025/0382237 A1Tianjin University
- Phosphorous containing particles8 May 2025US 2025/0145545 A1NDSU Research Foundation
Most cited
By later US patents
- Crystallization of poly ammonium phosphate in particular organic material and uses thereof44US 9,249,021 B22016
- Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid31US 4,377,406 ATennessee Valley Authority · 1983
- Method and structure for terminating fine wires20US 4,026,013 AAMP Incorporated · 1977
- Inorganic phosphorous fertilizer20US 5,707,418 ASafergro Laboratories, Inc. · 1998
- Stable form of iron humate or of other meso and micro nutritive elements available for plant nutrition and method for obtaining it19US 6,080,220 AValagro S.P.A. · 2000