B29K 2023/22
Copolymers of isobutene
Official title: {Copolymers of isobutene, e.g. butyl rubber}
B29K2023/22 (Copolymers of isobutene) appears on 60 US grants and 62 published applications in this corpus.
Search patents in B29K- Granted patents
- 60
- Published applications
- 62
- Assignees
- 41
- Inventors
- 159
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 3 | 4 |
| 2005 | 2 | 2 |
| 2006 | 0 | 4 |
| 2007 | 2 | 1 |
| 2008 | 2 | 3 |
| 2009 | 3 | 2 |
| 2010 | 2 | 4 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 3 | 6 |
| 2016 | 2 | 2 |
| 2017 | 4 | 2 |
| 2018 | 1 | 3 |
| 2019 | 2 | 1 |
| 2020 | 2 | 4 |
| 2021 | 2 | 4 |
| 2022 | 1 | 3 |
| 2023 | 1 | 3 |
| 2024 | 4 | 5 |
| 2025 | 3 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sealant composition for self-sealing pneumatic tire15 Sep 2026US 12,734,772 B2The Goodyear Tire & Rubber Company
- Manufacturing a two-part elastomeric plunger16 Dec 2025US 12,496,751 B2Sanofi
- Coextruded polymeric article and method of making the same22 Apr 2025US 12,280,917 B23M Innovative Properties Company
- Foam molded article28 Jan 2025US 12,209,169 B2Panasonic Intellectual Property Management Co., Ltd.
- Self sealing tire16 Jul 2024US 12,036,756 B2The Goodyear Tire & Rubber Company
- Golf club shaft, golf club, and method for manufacturing golf club shaft27 Aug 2026US 2026/0249144 A1Fujikura Composites Inc.
- Method of producing sealing material and sealing material27 Aug 2026US 2026/0249570 A1Valqua, Ltd.
- Rubber compositions and articles thereof9 Jul 2026US 2026/0193457 A1The Goodyear Tire & Rubber Company
- Method for protecting buried metal and concrete structures from bacteria-induced corrosion27 Mar 2025US 2025/0102101 A1
- Encapsulation film19 Dec 2024US 2024/0416570 A1LG Chem.Ltd.
Most cited
By later US patents
- Elastomeric cushioning devices for products and objects188US 4,287,250 A1981
- Skin barrier composition comprising an irradiated crosslinked ethylene-vinyl acetate copolymer and polyisobutylene93US 4,477,325 AHollister Incorporated · 1984
- Solventless compounding and coating of non-thermoplastic hydrocarbon elastomers57US 5,539,033 AMinnesota Mining and Manufacturing Company · 1996
- Gasline repair kit46US 4,756,337 ARoyston Laboratories, Inc. · 1988
- Covering sheet having minute unevenness on the surface thereof, methods of producing said sheet and a molding using said sheet45US 5,817,402 ASekisui Kagaku Kogyo Kabushiki Kaisha · 1998