C08L 2023/42
Depolymerisation, vis-breaking or degradation
Official title: {Depolymerisation, vis-breaking or degradation}
C08L2023/42 (Depolymerisation, vis-breaking or degradation) appears on 77 US grants and 72 published applications in this corpus.
Search patents in C08L- Granted patents
- 77
- Published applications
- 72
- Assignees
- 59
- Inventors
- 214
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 4 | 3 |
| 2004 | 1 | 3 |
| 2005 | 0 | 4 |
| 2006 | 1 | 4 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 3 |
| 2013 | 2 | 5 |
| 2014 | 2 | 1 |
| 2015 | 1 | 2 |
| 2016 | 4 | 0 |
| 2017 | 1 | 4 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 3 | 3 |
| 2021 | 4 | 5 |
| 2022 | 3 | 7 |
| 2023 | 2 | 4 |
| 2024 | 0 | 3 |
| 2025 | 0 | 5 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for feeding a liquid organic peroxide to a polymer melt processing equipment18 Aug 2026US 12,709,666 B2Lummus Novolen Technology GmbH
- Composition of polymers derived through the maleation of depolymerized polypropylene2 Jun 2026US 12,643,988 B2GreenMantra Recycling Technologies Ltd.
- Polymer recyclate processes and products12 May 2026US 12,623,392 B2Equistar Chemicals, LP
- Polypropylene resin composition with excellent flame retardancy and formability7 Apr 2026US 12,595,362 B2Hanwha Totalenergies Petrochemical Co., Ltd.
- No break polypropylene impact copolymers with melt flow rate higher than 90 g/10 min6 Jun 2023US 11,667,779 B2Braskem S/A
- High melt strength polypropylene27 Aug 2026US 2026/0250430 A1
- Process for preparing a long chain branched polypropylene composition26 Feb 2026US 2026/0055214 A1Borealis AG
- Polymer recyclate blends and products4 Dec 2025US 2025/0368812 A1Equistar Chemicals, LP
- Heterophasic polypropylene composition with low hexane extractables11 Sep 2025US 2025/0282941 A1Sabic Global Technologies B.V.
- Rheology modifier for recycled polypropylene14 Aug 2025US 2025/0257203 A1Fina Technology, Inc.
Most cited
By later US patents
- Foamed articles comprising high melt strength propylene polymer material88US 5,605,936 AMontell North America Inc. · 1997
- High melt strength, propylene polymer, process for making it, and use thereof75US 5,414,027 AHimont Incorporated · 1995
- Method of improving processability of polymers and resulting polymer compositions69US 4,451,589 AKimberly-Clark Corporation · 1984
- High impact visbroken polymeric blends49US 4,375,531 ANorthern Petrochemical Company · 1983
- High melt strength, propylene polymer, process for making it, and use thereof49US 5,541,236 AMontell North America Inc. · 1996