C08J 9/20
By suspension polymerisation in the presence of the blowing agent
Official title: by suspension polymerisation in the presence of the blowing agent
C08J9/20 (By suspension polymerisation in the presence of the blowing agent) appears on 200 US grants and 177 published applications in this corpus.
Search patents in C08J- Granted patents
- 200
- Published applications
- 177
- Assignees
- 112
- Inventors
- 516
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 4 |
| 2003 | 4 | 8 |
| 2004 | 3 | 4 |
| 2005 | 3 | 3 |
| 2006 | 2 | 3 |
| 2007 | 3 | 8 |
| 2008 | 2 | 5 |
| 2009 | 0 | 5 |
| 2010 | 1 | 6 |
| 2011 | 2 | 4 |
| 2012 | 1 | 11 |
| 2013 | 5 | 6 |
| 2014 | 5 | 11 |
| 2015 | 10 | 9 |
| 2016 | 7 | 11 |
| 2017 | 4 | 10 |
| 2018 | 11 | 7 |
| 2019 | 6 | 9 |
| 2020 | 5 | 8 |
| 2021 | 8 | 7 |
| 2022 | 6 | 7 |
| 2023 | 6 | 9 |
| 2024 | 6 | 12 |
| 2025 | 4 | 8 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermally expandable cellulose-based microspheres having low expansion temperatures16 Jun 2026US 12,655,263 B2Nouryon Chemicals International B. V.
- Biodegradable compositions and articles formed therefrom24 Mar 2026US 12,583,989 B2Eastman Chemical Company
- Polyurethane foam composition containing TPU powder and manufacturing method of shoe insole using the same10 Mar 2026US 12,570,823 B2Sam Bu Fine Chemicalco., Ltd.
- Melamine-formaldehyde foam with improved weather resistance7 Oct 2025US 12,435,175 B2BASF SE
- Heat-expandable polyvinylidene chloride microsphere and its preparation method30 Sep 2025US 12,428,536 B2Zhejiang Juhua Co., Ltd. Electrochemistry Plant
- Heat-expandable microspheres and use thereof13 Aug 2026US 2026/0233442 A1Matsumoto Yushi-Seiyaku Co., Ltd.
- Systems and methods for making and using superabsorbent porous gels2 Jul 2026US 2026/0184874 A1University of Maryland, College Park
- Foaming curable composition11 Sep 2025US 2025/0282922 A1Sunstar Engineering Inc.
- Expandable resin particle, expanded resin particle, foamed resin molded article and manufacturing method thereof7 Aug 2025US 2025/0250405 A1Lcy Chemical Corp.
- Preparation method for thermally expandable microsphere containing hydrophilic organic-modified colloidal silicon dioxide8 May 2025US 2025/0145787 A1Wanhua Chemical Group Co., Ltd.
Most cited
By later US patents
- Polymerization of styrene acrylonitrile expandable microspheres100US 3,945,956 AThe Dow Chemical Company · 1976
- Expandable thermoplastic microspheres and process for the production and use thereof52US 5,155,138 ACasco Nobel AB · 1992
- Porous particles, their aqueous dispersions, and method of preparation51US 6,632,531 B2Rohm and Haas Company · 2003
- Process for the preparation of polymer particles48US 6,242,540 B1NOVA Chemicals (International) S.A. · 2001
- Process for the preparation of polymer particles45US 6,160,027 ANOVA Chemicals (International) S.A. · 2000