C08K 5/524
Esters of phosphorous acids
Official title: Esters of phosphorous acids, e.g. of H3PO3
C08K5/524 (Esters of phosphorous acids) appears on 715 US grants and 822 published applications in this corpus.
Search patents in C08K- Granted patents
- 715
- Published applications
- 822
- Assignees
- 410
- Inventors
- 2,309
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 4 | 0 |
| 1978 | 13 | 0 |
| 1979 | 3 | 0 |
| 1980 | 12 | 0 |
| 1981 | 8 | 0 |
| 1982 | 10 | 0 |
| 1983 | 9 | 0 |
| 1984 | 11 | 0 |
| 1985 | 14 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 14 | 0 |
| 1992 | 14 | 0 |
| 1993 | 11 | 0 |
| 1994 | 12 | 0 |
| 1995 | 12 | 0 |
| 1996 | 15 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 14 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 4 |
| 2002 | 11 | 8 |
| 2003 | 9 | 14 |
| 2004 | 10 | 16 |
| 2005 | 9 | 15 |
| 2006 | 7 | 11 |
| 2007 | 12 | 11 |
| 2008 | 6 | 13 |
| 2009 | 2 | 23 |
| 2010 | 5 | 19 |
| 2011 | 15 | 32 |
| 2012 | 13 | 17 |
| 2013 | 14 | 35 |
| 2014 | 18 | 41 |
| 2015 | 20 | 23 |
| 2016 | 20 | 33 |
| 2017 | 22 | 44 |
| 2018 | 22 | 51 |
| 2019 | 34 | 42 |
| 2020 | 29 | 70 |
| 2021 | 44 | 51 |
| 2022 | 27 | 41 |
| 2023 | 33 | 58 |
| 2024 | 28 | 66 |
| 2025 | 22 | 43 |
| 2026 | 21 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Additive composition and use thereof, condensation polymer composition, molding compound and molding compounds produced therefrom, and molded parts and use thereof8 Sep 2026US 12,729,283 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Modified polyethylene resins and process for making the same7 Jul 2026US 12,674,011 B2Dow Global Technologies LLC
- Polypropylene composition for cable insulation7 Jul 2026US 12,674,052 B2Borealis AG
- Anti-ageing additives for bitumen23 Jun 2026US 12,662,589 B2Shell USA, Inc.
- Polycarbonate resin composition and molded articles16 Jun 2026US 12,655,271 B2Idemitsu Kosan Co., Ltd.
- Composite material containing wood-based fibers and having high impact strength8 Oct 2026US 2026/0307303 A1
- Flame retardant copolyester compositions17 Sep 2026US 2026/0275101 A1Eastman Chemical Company
- Polycarbonate resin composition17 Sep 2026US 2026/0275105 A1Idemitsu Kosan Co., Ltd.
- Cellulose ester polymer composition having low coefficient of friction10 Sep 2026US 2026/0265502 A1Lego A/S
- Polyolefin composition containing a recycled material13 Aug 2026US 2026/0234378 A1Basell Poliolefine Italia S.r.l.
Most cited
By later US patents
- Method of post-polymerization stabilization of high activity catalysts in continuous polyethylene terephthalate production155US 5,898,058 AWellman, Inc. · 1999
- Reduced density article119US 10,087,556 B2Sabic Global Technologies B.V. · 2018
- Stabilizer combination for the rotomolding process67US 5,883,165 ACiba Specialty Chemicals Corporation · 1999
- High density polyester-polycarbonate molding composition59US 5,441,997 AGeneral Electric Company · 1995
- Polyester compositions58US 7,468,409 B2Eastman Chemical Company · 2008