C08J 2325/04
Homopolymers or copolymers of styrene
C08J2325/04 (Homopolymers or copolymers of styrene) appears on 1,448 US grants and 1,865 published applications in this corpus.
Search patents in C08J- Granted patents
- 1,448
- Published applications
- 1,865
- Assignees
- 868
- Inventors
- 4,313
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 13 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 17 | 0 |
| 1985 | 10 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 11 | 0 |
| 1991 | 15 | 0 |
| 1992 | 18 | 0 |
| 1993 | 28 | 0 |
| 1994 | 26 | 0 |
| 1995 | 18 | 0 |
| 1996 | 13 | 0 |
| 1997 | 22 | 0 |
| 1998 | 28 | 0 |
| 1999 | 14 | 0 |
| 2000 | 28 | 0 |
| 2001 | 23 | 4 |
| 2002 | 28 | 27 |
| 2003 | 20 | 31 |
| 2004 | 16 | 21 |
| 2005 | 9 | 46 |
| 2006 | 15 | 45 |
| 2007 | 17 | 54 |
| 2008 | 9 | 49 |
| 2009 | 20 | 40 |
| 2010 | 26 | 64 |
| 2011 | 26 | 75 |
| 2012 | 26 | 73 |
| 2013 | 43 | 81 |
| 2014 | 47 | 80 |
| 2015 | 64 | 109 |
| 2016 | 61 | 121 |
| 2017 | 76 | 106 |
| 2018 | 67 | 102 |
| 2019 | 71 | 108 |
| 2020 | 71 | 110 |
| 2021 | 65 | 71 |
| 2022 | 79 | 97 |
| 2023 | 52 | 103 |
| 2024 | 61 | 111 |
| 2025 | 56 | 70 |
| 2026 | 46 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Resin composition, prepreg, film provided with resin, metal foil provided with resin, metal-clad laminate, and wiring board6 Oct 2026US 12,753,301 B2Panasonic Intellectual Property Management Co., Ltd.
- Optical compensation films based on combinations of negative birefrigent and positive birefrigent components6 Oct 2026US 12,754,358 B2Akron Polymer Systems, Inc.
- Curable compositions29 Sep 2026US 12,747,343 B2AGC Multi Material America, Inc.
- Separator and preparation method thereof, secondary battery and device29 Sep 2026US 12,749,765 B2Contemporary Amperex Technology (Hong Kong) Limited
- Porous resin used to solid phase synthesis and preparation method therefor22 Sep 2026US 12,742,051 B2Sunresin New Materials Co. Ltd.
- Polymer microparticles, resin modifier, and resin composition8 Oct 2026US 2026/0308338 A1Kaneka Corporation
- Processing petroleum-derived materials1 Oct 2026US 2026/0297268 A1Plastonix 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.
- Composite resin particles, foamable particles, foamed particles, molded foam, and production method for composite resin particles24 Sep 2026US 2026/0286080 A1Sekisui Kasei Co., Ltd.
- Method for preparing an aqueous dispersion of biocide-free organic opacifying pigment particles17 Sep 2026US 2026/0275055 A1Rohm and Haas Company
Most cited
By later US patents
- Elastomeric film and method for making the same118US 6,111,163 AKimberly-Clark Worldwide, Inc. · 2000
- Polymerization of styrene acrylonitrile expandable microspheres100US 3,945,956 AThe Dow Chemical Company · 1976
- Polymer foam process95US 4,424,287 AMobil Oil Corporation · 1984
- Compositions containing fluorine substituted olefins90US 7,279,451 B2Honeywell International Inc. · 2007
- Absorbent, extruded thermoplastic foams85US 6,071,580 AThe Dow Chemical Company · 2000