C08J 11/04
Recovery or working-up of waste materials: of polymers
Official title: of polymers
C08J11/04 (Recovery or working-up of waste materials: of polymers) appears on 2,446 US grants and 3,327 published applications in this corpus.
Search patents in C08J- Granted patents
- 2,446
- Published applications
- 3,327
- Assignees
- 1,553
- Inventors
- 7,264
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 28 | 0 |
| 1978 | 27 | 0 |
| 1979 | 21 | 0 |
| 1980 | 15 | 0 |
| 1981 | 18 | 0 |
| 1982 | 13 | 0 |
| 1983 | 4 | 0 |
| 1984 | 12 | 0 |
| 1985 | 10 | 0 |
| 1986 | 14 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 13 | 0 |
| 1990 | 6 | 0 |
| 1991 | 18 | 0 |
| 1992 | 21 | 0 |
| 1993 | 48 | 0 |
| 1994 | 49 | 0 |
| 1995 | 37 | 0 |
| 1996 | 29 | 0 |
| 1997 | 51 | 0 |
| 1998 | 47 | 0 |
| 1999 | 54 | 0 |
| 2000 | 51 | 0 |
| 2001 | 40 | 11 |
| 2002 | 40 | 48 |
| 2003 | 43 | 48 |
| 2004 | 40 | 50 |
| 2005 | 17 | 50 |
| 2006 | 34 | 57 |
| 2007 | 27 | 57 |
| 2008 | 23 | 38 |
| 2009 | 31 | 61 |
| 2010 | 45 | 49 |
| 2011 | 44 | 54 |
| 2012 | 43 | 46 |
| 2013 | 45 | 71 |
| 2014 | 39 | 85 |
| 2015 | 52 | 83 |
| 2016 | 49 | 90 |
| 2017 | 83 | 113 |
| 2018 | 66 | 112 |
| 2019 | 97 | 144 |
| 2020 | 114 | 130 |
| 2021 | 92 | 164 |
| 2022 | 89 | 243 |
| 2023 | 121 | 337 |
| 2024 | 162 | 409 |
| 2025 | 201 | 424 |
| 2026 | 191 | 353 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing (meth)acrylic monomer6 Oct 2026US 12,753,142 B2Microwave Chemical Co., Ltd.
- EVOH extractant, EVOH extraction method using the same, EVOH recovery method, and EVOH extractant regeneration method6 Oct 2026US 12,753,289 B2Kyoeisha Chemical Co., Ltd.
- Depolymerization of polyolefins for biological conversion6 Oct 2026US 12,753,290 B1National Technology & Engineering Solutions of Sandia, LLC
- Method for producing a partially recycled polyaryletherketone powder by sintering29 Sep 2026US 12,746,718 B2Arkema France
- Method for manufacturing polyester film having laminated structure29 Sep 2026US 12,747,326 B2Nan Ya Plastics Corporation
- Stabilizers for polymer foams based on recycling of polydimethylsiloxane8 Oct 2026US 2026/0308305 A1Evonik Operations GmbH
- Synthetic wax materials with degradable linkers8 Oct 2026US 2026/0308317 A1Board of Trustees of Michigan State University
- Recycled polymer compositions and methods thereof8 Oct 2026US 2026/0308340 A1Braskem S/A
- Hydrothermal treatment of polymers containing perfluroalkyl and/or halogenated compounds8 Oct 2026US 2026/0308349 A1
- Cyclodepolymerization method for aromatic polyesters8 Oct 2026US 2026/0308350 A1Soochow University
Most cited
By later US patents
- Dissolution and processing of cellulose using ionic liquids152US 6,824,599 B2University of Alabama · 2004
- Process for recycling mixed polymer containing polyethylene terephthalate107US 5,554,657 AShell Oil Company · 1996
- Advanced polymer wood composite101US 5,827,607 AAndersen Corporation · 1998
- Process for preparing polybutylene terephthalate from pet scrap98US 5,266,601 AZimmer, Inc. · 1993
- Novel compositions and process97US 4,382,108 AThe Upjohn Company · 1983