C07F 9/3839
Polyphosphonic acids
Official title: {Polyphosphonic acids}
C07F9/3839 (Polyphosphonic acids) appears on 461 US grants and 274 published applications in this corpus.
Search patents in C07F- Granted patents
- 461
- Published applications
- 274
- Assignees
- 283
- Inventors
- 1,002
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 11 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 14 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 13 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 19 | 0 |
| 1995 | 18 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 2 |
| 2002 | 3 | 12 |
| 2003 | 14 | 8 |
| 2004 | 9 | 16 |
| 2005 | 5 | 11 |
| 2006 | 11 | 12 |
| 2007 | 7 | 16 |
| 2008 | 11 | 11 |
| 2009 | 7 | 21 |
| 2010 | 13 | 12 |
| 2011 | 9 | 2 |
| 2012 | 4 | 7 |
| 2013 | 3 | 10 |
| 2014 | 15 | 16 |
| 2015 | 7 | 12 |
| 2016 | 8 | 13 |
| 2017 | 12 | 11 |
| 2018 | 10 | 15 |
| 2019 | 15 | 15 |
| 2020 | 11 | 4 |
| 2021 | 11 | 16 |
| 2022 | 5 | 8 |
| 2023 | 6 | 5 |
| 2024 | 7 | 9 |
| 2025 | 5 | 7 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07F 9/3873Containing nitrogen substituent275
- C07F 9/386Containing hydroxy substituents in the hydrocarbon radicals93
- C07F 9/3843Containing no further substituents than -po3h2 groups46
- C07F 9/3865Containing sulfur substituents40
- C07F 9/3869Containing carboxylic acid or carboxylic acid derivative substituents31
- C07F 9/3856Containing halogen or nitro substituents28
- C07F 9/3878Containing substituents selected from b, si, p or a metal2
Recent patents
- Phosphonates and N-halamines compositions for tartar removal1 Sep 2026US 12,721,800 B2Bar-Ilan University
- Peroxide stabilizers11 Aug 2026US 12,703,630 B2Diversey, Inc.
- Iron complexes with phosphonate-based ligands as RFB anolyte materials19 May 2026US 12,630,577 B2Battelle Memorial Institute
- Sequestering compositions and materials3 Mar 2026US 12,565,584 B2Alliance for Energy Innovation, LLC
- Marking precursor with squaric acid coupling12 Aug 2025US 12,383,636 B2Telix Pharmaceuticals Limited
- Phospholipid compounds and formulations27 Aug 2026US 2026/0248830 A1AVVIO Medical, Inc.
- Process for regeneration of an epoxidation reactor16 Jul 2026US 2026/0201277 A1BASF SE
- New ultra-microporous crystalline metal organic frameworks comprising bisphosphonic acid ligands12 Feb 2026US 2026/0042787 A1Centre National De La Recherche Scientifique
- Organic compound and preparation method thereof and use thereof27 Nov 2025US 2025/0366297 A1Contemporary Amperex Future Energy Research Institute (Shanghai) Limited
- Phosphonate-Based Coordination Complexes and Methods of Preparation and Use Thereof25 Sep 2025US 2025/0296942 A1
Most cited
By later US patents
- Diagnostic media413US 4,647,447 ASchering Corporation · 1987
- Method of enhancing NMR imaging using chelated paramagnetic ions bound to biomolecules213US 5,021,236 ASchering Corporation · 1991
- Bisphosphonate squalene synthetase inhibitors and method109US 5,157,027 AE. R. Squibb & Sons, Inc. · 1992
- Sterile pharmaceutical compositions of gadolinium chelates useful enhancing NMR imaging99US 4,957,939 ASchering Corporation · 1990
- Substituted imidazolium compounds for treating disease97US 8,901,162 B1Antecip Bioventures II LLC · 2014