C08F 255/04
On to ethylene-propylene copolymers
Official title: on to ethylene-propylene copolymers {(C08F255/023 takes precedence)}
C08F255/04 (On to ethylene-propylene copolymers) appears on 164 US grants and 127 published applications in this corpus.
Search patents in C08F- Granted patents
- 164
- Published applications
- 127
- Assignees
- 100
- Inventors
- 463
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 8 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 3 | 2 |
| 2005 | 2 | 3 |
| 2006 | 3 | 3 |
| 2007 | 1 | 2 |
| 2008 | 1 | 4 |
| 2009 | 0 | 3 |
| 2010 | 1 | 7 |
| 2011 | 0 | 6 |
| 2012 | 3 | 2 |
| 2013 | 5 | 6 |
| 2014 | 4 | 8 |
| 2015 | 2 | 4 |
| 2016 | 5 | 7 |
| 2017 | 7 | 10 |
| 2018 | 8 | 11 |
| 2019 | 7 | 10 |
| 2020 | 11 | 6 |
| 2021 | 6 | 2 |
| 2022 | 2 | 7 |
| 2023 | 4 | 7 |
| 2024 | 4 | 5 |
| 2025 | 3 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ethylene/alpha-olefin copolymer composition and application thereof28 Apr 2026US 12,612,529 B2Mitsui Chemicals, Inc.
- Modified polyolefin resin and use thereof17 Jun 2025US 12,331,140 B2Nippon Paper Industries Co., Ltd.
- Olefin resin, crosslinked product thereof, and production methods thereof15 Apr 2025US 12,275,812 B2Mitsui Chemicals, Inc.
- Adhesive composition and heat-fusible member using same4 Feb 2025US 12,215,250 B2Toagosei Co., Ltd.
- Modified polyolefin resin and dispersion composition thereof27 Aug 2024US 12,071,499 B2Nippon Paper Industries Co., Ltd.
- Crosslinkable elastomeric compositions including sustainable content, articles made therefrom, and methods of making the same3 Sep 2026US 2026/0258181 A1Avient Corporation
- Photovoltaic encapsulation film composition with anti-pid performance13 Aug 2026US 2026/0234312 A1
- Rubber composition and tire5 Feb 2026US 2026/0035556 A1The Yokohama Rubber Co., Ltd.
- Tire compositions comprising functionalized rubbers based on ethylene-copolymers9 Oct 2025US 2025/0313041 A1Arlanxeo Deutschland GmbH
- Process for making grafted polyolefin2 Oct 2025US 2025/0304738 A1
Most cited
By later US patents
- Low melt viscosity amorphous copolyesters with enhanced glass transition temperatures having improved gas barrier properties129US 6,183,848 B2Eastman Chemical Company · 2001
- Process for producing expandable thermoplastic resin beads107US 4,303,756 ASekisui Kaseihin Kogyo Kabushiki Kaisha · 1981
- Polymeric additives for fuels and lubricants97US 4,089,794 AExxon Research & Engineering Co. · 1978
- Highly grafted, multi-functional olefin copolymer VI modifiers93US 6,107,257 AEthyl Corporation · 2000
- Ethylene/.alpha.-olefin copolymer composition, graft modified ethylene/.alpha.-olefin copolymer composition, ethylene copolymer composition, and multi-stage olefin polymerization process55US 5,464,905 AMitsui Petrochemical Industries, Ltd. · 1995