C08J 11/00
Recovery or working-up of waste materials
Official title: Recovery or working-up of waste materials (recovery of plastics B29B17/00; polymerisation processes involving purification or recycling of waste polymers or their depolymerisation products C08B, C08C, C08F, C08G, C08H)
C08J11/00 (Recovery or working-up of waste materials) appears on 2,635 US grants and 3,487 published applications in this corpus.
Search patents in C08J- Granted patents
- 2,635
- Published applications
- 3,487
- Assignees
- 1,635
- Inventors
- 7,762
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 30 | 0 |
| 1978 | 30 | 0 |
| 1979 | 22 | 0 |
| 1980 | 15 | 0 |
| 1981 | 19 | 0 |
| 1982 | 18 | 0 |
| 1983 | 5 | 0 |
| 1984 | 13 | 0 |
| 1985 | 13 | 0 |
| 1986 | 15 | 0 |
| 1987 | 12 | 0 |
| 1988 | 5 | 0 |
| 1989 | 13 | 0 |
| 1990 | 11 | 0 |
| 1991 | 19 | 0 |
| 1992 | 24 | 0 |
| 1993 | 50 | 0 |
| 1994 | 56 | 0 |
| 1995 | 40 | 0 |
| 1996 | 32 | 0 |
| 1997 | 54 | 0 |
| 1998 | 50 | 0 |
| 1999 | 61 | 0 |
| 2000 | 56 | 0 |
| 2001 | 43 | 12 |
| 2002 | 43 | 52 |
| 2003 | 46 | 53 |
| 2004 | 45 | 54 |
| 2005 | 18 | 51 |
| 2006 | 36 | 59 |
| 2007 | 31 | 59 |
| 2008 | 24 | 40 |
| 2009 | 33 | 62 |
| 2010 | 45 | 53 |
| 2011 | 44 | 60 |
| 2012 | 44 | 50 |
| 2013 | 52 | 75 |
| 2014 | 45 | 96 |
| 2015 | 65 | 95 |
| 2016 | 58 | 104 |
| 2017 | 96 | 123 |
| 2018 | 73 | 130 |
| 2019 | 105 | 155 |
| 2020 | 126 | 131 |
| 2021 | 98 | 175 |
| 2022 | 97 | 249 |
| 2023 | 123 | 342 |
| 2024 | 164 | 420 |
| 2025 | 202 | 429 |
| 2026 | 192 | 358 |
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