C08F 297/02
Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst
Official title: using a catalyst of the anionic type
C08F297/02 (Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst) appears on 1,380 US grants and 1,237 published applications in this corpus.
Search patents in C08F- Granted patents
- 1,380
- Published applications
- 1,237
- Assignees
- 389
- Inventors
- 2,721
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 8 | 0 |
| 1978 | 18 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 16 | 0 |
| 1982 | 8 | 0 |
| 1983 | 12 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 11 | 0 |
| 1988 | 7 | 0 |
| 1989 | 13 | 0 |
| 1990 | 15 | 0 |
| 1991 | 12 | 0 |
| 1992 | 24 | 0 |
| 1993 | 35 | 0 |
| 1994 | 38 | 0 |
| 1995 | 33 | 0 |
| 1996 | 31 | 0 |
| 1997 | 34 | 0 |
| 1998 | 32 | 0 |
| 1999 | 15 | 0 |
| 2000 | 25 | 0 |
| 2001 | 43 | 5 |
| 2002 | 36 | 20 |
| 2003 | 31 | 51 |
| 2004 | 27 | 55 |
| 2005 | 29 | 74 |
| 2006 | 36 | 61 |
| 2007 | 46 | 62 |
| 2008 | 24 | 45 |
| 2009 | 31 | 45 |
| 2010 | 55 | 50 |
| 2011 | 43 | 39 |
| 2012 | 22 | 30 |
| 2013 | 34 | 30 |
| 2014 | 37 | 29 |
| 2015 | 26 | 43 |
| 2016 | 32 | 44 |
| 2017 | 44 | 54 |
| 2018 | 37 | 62 |
| 2019 | 40 | 62 |
| 2020 | 38 | 80 |
| 2021 | 43 | 58 |
| 2022 | 49 | 70 |
| 2023 | 34 | 56 |
| 2024 | 46 | 50 |
| 2025 | 39 | 39 |
| 2026 | 13 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing block copolymer6 Oct 2026US 12,753,264 B2Nippon Soda Co., Ltd.
- Preparation of polyolefin-polyacrylate block copolymers additives for increasing surface energy of polyethylene8 Sep 2026US 12,729,262 B2Dow Global Technologies LLC
- Hydrogenated copolymer, resin composition, molded article, and adhesive film2 Jun 2026US 12,643,974 B2Asahi Kasei Kabushiki Kaisha
- Resin composition, stretchable film, sheet and tube2 Jun 2026US 12,643,998 B2Zeon Corporation
- Organozinc compound preparation method, chain transfer agent, block copolymer, and resin composition12 May 2026US 12,624,054 B2LG Chem.Ltd.
- Method for Producing Copolymer Having Improved Oil Retainability27 Aug 2026US 2026/0250429 A1Kuraray Co., Ltd.
- Polymer compositions for photovoltaic modules20 Aug 2026US 2026/0242526 A1Kraton Corporation
- Conjugated diene - vinyl aromatic hydrocarbon copolymer and method thereof20 Aug 2026US 2026/0242575 A1TSRC Corporation
- High-temperature-resistant perfluoroether fluororubber and preparation method therefor6 Aug 2026US 2026/0226219 A1Zhonghao Chenguang Research Institute of Chemical Industry Co., Ltd.
- Solid electrolyte membrane and all-solid batteries comprising the same6 Aug 2026US 2026/0229593 A1Korea Kumho Petrochemical Co., Ltd.
Most cited
By later US patents
- Drug delivery compositions and medical devices containing block copolymer375US 6,545,097 B2SciMed Life Systems, Inc. · 2003
- Block-graft copolymer284US 4,803,243 AShin-Etsu Chemical Co., Ltd. · 1989
- Shape memory polymer resin, composition and the shape memorizing molded product thereof250US 5,189,110 AAsahi Kasei Kogyo Kabushiki Kaisha · 1993
- Process for the preparation of a block copolymer composition172US 5,994,476 AKorea Kumbo Petrochemical Co., Ltd. · 1999
- Asymmetric block copolymers and corresponding adhesive formulations125US 4,391,949 AShell Oil Company · 1983