C08L 25/04
Homopolymers or copolymers of styrene
C08L25/04 (Homopolymers or copolymers of styrene) appears on 3,398 US grants and 3,297 published applications in this corpus.
Search patents in C08L- Granted patents
- 3,398
- Published applications
- 3,297
- Assignees
- 1,265
- Inventors
- 8,484
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 51 | 0 |
| 1977 | 19 | 0 |
| 1978 | 40 | 0 |
| 1979 | 30 | 0 |
| 1980 | 25 | 0 |
| 1981 | 36 | 0 |
| 1982 | 25 | 0 |
| 1983 | 27 | 0 |
| 1984 | 34 | 0 |
| 1985 | 35 | 0 |
| 1986 | 39 | 0 |
| 1987 | 30 | 0 |
| 1988 | 32 | 0 |
| 1989 | 47 | 0 |
| 1990 | 46 | 0 |
| 1991 | 41 | 0 |
| 1992 | 51 | 0 |
| 1993 | 57 | 0 |
| 1994 | 62 | 0 |
| 1995 | 45 | 0 |
| 1996 | 44 | 0 |
| 1997 | 45 | 0 |
| 1998 | 69 | 0 |
| 1999 | 62 | 0 |
| 2000 | 83 | 0 |
| 2001 | 80 | 16 |
| 2002 | 76 | 82 |
| 2003 | 70 | 94 |
| 2004 | 74 | 116 |
| 2005 | 50 | 98 |
| 2006 | 49 | 105 |
| 2007 | 57 | 95 |
| 2008 | 32 | 88 |
| 2009 | 28 | 108 |
| 2010 | 54 | 131 |
| 2011 | 76 | 101 |
| 2012 | 74 | 121 |
| 2013 | 96 | 133 |
| 2014 | 92 | 111 |
| 2015 | 94 | 112 |
| 2016 | 91 | 144 |
| 2017 | 137 | 137 |
| 2018 | 94 | 205 |
| 2019 | 132 | 209 |
| 2020 | 172 | 235 |
| 2021 | 126 | 217 |
| 2022 | 140 | 188 |
| 2023 | 158 | 165 |
| 2024 | 115 | 134 |
| 2025 | 102 | 86 |
| 2026 | 54 | 66 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Curable compositions29 Sep 2026US 12,747,343 B2AGC Multi Material America, Inc.
- Process for the production of biodegradable superabsorbent polymer with high absorbency under load based on styrene maleic acid copolymers and biopolymer15 Sep 2026US 12,734,270 B2Polygreen Ltd
- Polyfunctional vinyl aromatic copolymer and method for manufacturing same, copolymer rubber obtained therefrom, rubber composition, rubber crosslinked material, and tire member25 Aug 2026US 12,715,943 B2Nippon Steel Chemical & Material Co., Ltd.
- Polymer fine particles having structural color development property25 Aug 2026US 12,715,988 B2Mitsubishi Chemical Corporation
- Material for a polystyrene-based food packaging and preparation method11 Aug 2026US 12,703,783 B2Siamp Cedap Reunies
- Elastic sulfonated styrene diene block copolymers8 Oct 2026US 2026/0308343 A1Rensselaer Polytechnic Institute
- Strain tolerant recycled asphalt pavement composition1 Oct 2026US 2026/0296972 A1ArrMaz Products Inc.
- Foamable composite resin particles, method of producing the same, foamed particles, method of producing the same, foamed molded article, and automobile member1 Oct 2026US 2026/0297316 A1Sekisui Kasei Co., Ltd.
- Toner1 Oct 2026US 2026/0299449 A1Canon Kabushiki Kaisha
- Molded stator and motor1 Oct 2026US 2026/0302841 A1Resonac Corporation
Most cited
By later US patents
- Joint320US 6,332,733 B1Hamberger Industriewerke GmbH · 2001
- Plastic additive, plastic composition containing the additive and plastic molding containing the additive276US 5,648,013 ACanon Kabushiki Kaisha · 1997
- Pseudo-random copolymers formed by use of constrained geometry addition polymerization catalysts256US 5,703,187 AThe Dow Chemical Company · 1997
- Structures and fabricated articles having shape memory made from .alpha.-olefin/vinyl or vinylidene aromatic and/or hindered aliphatic vinyl or vinylidene interpolymers210US 6,156,842 AThe Dow Chemical Company · 2000
- Medicating impressed film wound dressing184US 4,990,144 ASmith and Nephew Associated Companies Limited · 1991