C07F 9/38
Phosphonic acids [rp2]
Official title: Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids {; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]}
C07F9/38 (Phosphonic acids [rp2]) appears on 3,922 US grants and 1,770 published applications in this corpus.
Search patents in C07F- Granted patents
- 3,922
- Published applications
- 1,770
- Assignees
- 1,222
- Inventors
- 6,523
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 184 | 0 |
| 1977 | 175 | 0 |
| 1978 | 289 | 0 |
| 1979 | 96 | 0 |
| 1980 | 104 | 0 |
| 1981 | 163 | 0 |
| 1982 | 81 | 0 |
| 1983 | 77 | 0 |
| 1984 | 108 | 0 |
| 1985 | 96 | 0 |
| 1986 | 73 | 0 |
| 1987 | 92 | 0 |
| 1988 | 61 | 0 |
| 1989 | 67 | 0 |
| 1990 | 69 | 0 |
| 1991 | 75 | 0 |
| 1992 | 80 | 0 |
| 1993 | 84 | 0 |
| 1994 | 76 | 0 |
| 1995 | 86 | 0 |
| 1996 | 71 | 0 |
| 1997 | 79 | 0 |
| 1998 | 82 | 0 |
| 1999 | 77 | 0 |
| 2000 | 61 | 0 |
| 2001 | 63 | 18 |
| 2002 | 62 | 70 |
| 2003 | 74 | 83 |
| 2004 | 59 | 89 |
| 2005 | 41 | 94 |
| 2006 | 66 | 91 |
| 2007 | 44 | 70 |
| 2008 | 60 | 69 |
| 2009 | 46 | 98 |
| 2010 | 72 | 70 |
| 2011 | 46 | 61 |
| 2012 | 61 | 92 |
| 2013 | 65 | 84 |
| 2014 | 73 | 88 |
| 2015 | 89 | 100 |
| 2016 | 62 | 59 |
| 2017 | 60 | 70 |
| 2018 | 55 | 73 |
| 2019 | 69 | 79 |
| 2020 | 59 | 40 |
| 2021 | 44 | 63 |
| 2022 | 25 | 49 |
| 2023 | 29 | 41 |
| 2024 | 35 | 45 |
| 2025 | 34 | 42 |
| 2026 | 23 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Compound, and composition for forming hole transporting layer for perovskite solar cells15 Sep 2026US 12,735,395 B2Tokyo Chemical Industry Co., Ltd.
- Small molecule degraders of STAT38 Sep 2026US 12,729,213 B2The Regents of the University of Michigan
- Method of producing alkenyl phosphorus compound8 Sep 2026US 12,729,214 B2Maruzen Petrochemical Co., Ltd.
- Phosphonates and N-halamines compositions for tartar removal1 Sep 2026US 12,721,800 B2Bar-Ilan University
- Phosphoantigen prodrug compounds1 Sep 2026US 12,723,055 B2The University of Birmingham
- Novel phosphoantigen prodrug compound and use thereof8 Oct 2026US 2026/0306541 A1
- Structured molecular vectors for anti-inflammatory compounds and uses thereof3 Sep 2026US 2026/0258062 A1Centre National De La Recherche Scientifique
- Phospholipid compounds and formulations27 Aug 2026US 2026/0248830 A1AVVIO Medical, Inc.
- Ptp1b/tc-ptp dual inhibitors and protein degraders20 Aug 2026US 2026/0240878 A1Purdue Research Foundation
- Intermolecular cyclopropanation of unsaturated hydrocarbons20 Aug 2026US 2026/0242327 A1The Penn State Research Foundation
Most cited
By later US patents
- Diagnostic media413US 4,647,447 ASchering Corporation · 1987
- Electrochromic device368US 6,870,657 B1University College Dublin · 2005
- Lipid derivatives of phosphonoacids for liposomal incorporation and method of use262US 5,194,654 AVical Incorporated · 1993
- Method of enhancing NMR imaging using chelated paramagnetic ions bound to biomolecules213US 5,021,236 ASchering Corporation · 1991
- Drug composition containing nucleic acid copolymer208US 5,705,188 ANippon Shinyaku Co., Ltd. · 1998