C08K 5/527
Cyclic esters
C08K5/527 (Cyclic esters) appears on 442 US grants and 336 published applications in this corpus.
Search patents in C08K- Granted patents
- 442
- Published applications
- 336
- Assignees
- 205
- Inventors
- 1,021
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 10 | 0 |
| 1981 | 7 | 0 |
| 1982 | 12 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 10 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 27 | 0 |
| 1995 | 15 | 0 |
| 1996 | 15 | 0 |
| 1997 | 16 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 3 |
| 2003 | 2 | 8 |
| 2004 | 2 | 6 |
| 2005 | 5 | 10 |
| 2006 | 3 | 6 |
| 2007 | 4 | 8 |
| 2008 | 4 | 12 |
| 2009 | 5 | 9 |
| 2010 | 9 | 12 |
| 2011 | 7 | 7 |
| 2012 | 4 | 7 |
| 2013 | 5 | 17 |
| 2014 | 3 | 17 |
| 2015 | 4 | 18 |
| 2016 | 13 | 16 |
| 2017 | 15 | 22 |
| 2018 | 13 | 13 |
| 2019 | 13 | 19 |
| 2020 | 12 | 25 |
| 2021 | 17 | 17 |
| 2022 | 16 | 19 |
| 2023 | 10 | 28 |
| 2024 | 15 | 16 |
| 2025 | 5 | 10 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nucleating agent composition, olefin-based resin composition, molded article thereof, and method for producing olefin-based resin composition15 Sep 2026US 12,735,514 B2Adeka Corporation
- 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.
- Crystal nucleating agent composition for polyolefin resin, and polyolefin resin composition including said crystal nucleating agent composition8 Sep 2026US 12,729,286 B2New Japan Chemical Co., Ltd.
- Compound18 Aug 2026US 12,709,627 B2Sumitomo Chemical Company, Limited
- Polycarbonate resin composition and molded articles16 Jun 2026US 12,655,271 B2Idemitsu Kosan Co., Ltd.
- Resin composition and method for stabilizing organic material1 Oct 2026US 2026/0297305 A1Sumitomo Chemical Company, Limited
- Resin composition and heat dissipation member16 Jul 2026US 2026/0201148 A1Sekisui Chemical Co., Ltd.
- Alpha-nucleated propylene/ethylene/1-butene terpolymer compositions for blown and cast films28 May 2026US 2026/0146151 A1
- Phosphorus-containing compound, method of preparing the same, resin composition and article made therefrom30 Apr 2026US 2026/0117046 A1Elite Electronic Material (Zhongshan) Co., Ltd.
- Stabilizer, organic material composition, and method for stabilizing organic material16 Apr 2026US 2026/0103482 A1Sumitomo Chemical Company, Limited
Most cited
By later US patents
- Crystalline synthetic resin composition98US 5,342,868 AAsahi Denka Kogyo Kabushiki Kaisha · 1994
- Flame retardant composition of polyphenylene ether, styrene resin and cyclic phosphate95US 4,154,775 AGeneral Electric Company · 1979
- Stabilizer combination for the rotomolding process67US 5,883,165 ACiba Specialty Chemicals Corporation · 1999
- Alkanolamine esters of 1,1'-biphenyl-2,2'-diyl-and alkylidene-1,1'-biphenyl-2,2'-diyl-cyclic phosphites59US 4,318,845 ACiba-Geigy Corporation · 1982
- Bis-phenol phosphates as clarifiers for polyolefin resins57US 4,463,113 A1984