C05B
Phosphatic fertilisers
C05B (Phosphatic fertilisers) appears on 1,153 US grants and 1,214 published applications in this corpus.
Search patents in C05B- Granted patents
- 1,153
- Published applications
- 1,214
- Assignees
- 768
- Inventors
- 2,455
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 35 | 0 |
| 1977 | 36 | 0 |
| 1978 | 15 | 0 |
| 1979 | 26 | 0 |
| 1980 | 17 | 0 |
| 1981 | 17 | 0 |
| 1982 | 23 | 0 |
| 1983 | 16 | 0 |
| 1984 | 13 | 0 |
| 1985 | 18 | 0 |
| 1986 | 15 | 0 |
| 1987 | 9 | 0 |
| 1988 | 3 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 11 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 11 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 11 | 0 |
| 2002 | 10 | 9 |
| 2003 | 9 | 11 |
| 2004 | 4 | 17 |
| 2005 | 4 | 20 |
| 2006 | 4 | 18 |
| 2007 | 5 | 13 |
| 2008 | 6 | 15 |
| 2009 | 13 | 21 |
| 2010 | 16 | 25 |
| 2011 | 13 | 32 |
| 2012 | 26 | 31 |
| 2013 | 37 | 47 |
| 2014 | 39 | 72 |
| 2015 | 54 | 74 |
| 2016 | 73 | 111 |
| 2017 | 40 | 94 |
| 2018 | 67 | 75 |
| 2019 | 77 | 83 |
| 2020 | 67 | 71 |
| 2021 | 55 | 60 |
| 2022 | 39 | 64 |
| 2023 | 31 | 70 |
| 2024 | 48 | 78 |
| 2025 | 46 | 58 |
| 2026 | 29 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- C05B 17/00Phosphatic fertilisers: other phosphatic fertilisers493
- C05B 7/00Fertilisers based essentially on alkali or ammonium orthophosphates468
- C05B 13/00Fertilisers produced by pyrogenic processes from phosphatic materials127
- C05B 1/00Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric107
- C05B 11/00Fertilisers produced by wet-treating or leaching raw materials either with acids in81
- C05B 15/00Organic phosphatic fertilisers72
- C05B 3/00Fertilisers based essentially on di-calcium phosphate49
- C05B 19/00Granulation or pelletisation of phosphatic fertilisers, other than slag46
Recent patents
- Nitrogen fertilizer compositions based on polyphosphate caged structure6 Oct 2026US 12,753,128 B2Agtec Innovations, Inc.
- Polymeric salt-tolerant and water-retaining fertilizer and preparation method thereof8 Sep 2026US 12,729,168 B2Qingdao Agricultural University
- Method for electrochemical synchronous synthesis of urea and struvite using nitrogen and phosphorus pollutants and waste gas field8 Sep 2026US 12,729,447 B2Nanchang University
- Methods of increasing irrigation water and fertilizer delivery to soil using formic acid and formate salts, making a formate salt from carbon dioxide, and generating a carbon credit21 Jul 2026US 12,686,652 B2Deerpoint Group, Inc.
- Lignin-urea agricultural fertilizer7 Jul 2026US 12,673,903 B2Sustainable Fiber Technologies, LLC
- Method for reducing nitrogen and phosphorus emission in strawberry cultivation to mitigate continuous cropping obstacles in greenhouse8 Oct 2026US 2026/0305524 A1Shandong Academy of Agricultural Sciences
- Mineral phosphate ash based fertilizer containing magnesium, produced from sewage sludge ash, and process for the production thereof8 Oct 2026US 2026/0308076 A1
- Water insoluble polyphosphate fertilizers1 Oct 2026US 2026/0296985 A1
- Storage stable liquid fugitive colored fire-retardant concentrates1 Oct 2026US 2026/0297428 A1Perimeter Solutions LP
- Biochars, biochar extracts and biochar extracts having soluble signaling compounds and method for capturing material extracted from biochar10 Sep 2026US 2026/0262683 A1Talipot Cool Extract (IP), LLC
Most cited
By later US patents
- Biochar157US 8,361,186 B1Full Circle Biochar, Inc. · 2013
- Biochemical fertilizer composition73US 6,228,806 B1Organica, Inc. · 2001
- Process for solidifying aqueous wastes and products thereof71US 4,124,405 APEC-Engineering Societe Anonyme · 1978
- Biochar67US 8,747,797 B2Full Circle Biochar, Inc. · 2014
- Fire mitigation and moderating agents61US 8,080,186 B12011