C08F 8/50
Partial depolymerisation
C08F8/50 (Partial depolymerisation) appears on 350 US grants and 290 published applications in this corpus.
Search patents in C08F- Granted patents
- 350
- Published applications
- 290
- Assignees
- 222
- Inventors
- 986
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 11 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 12 | 0 |
| 1992 | 2 | 0 |
| 1993 | 12 | 0 |
| 1994 | 10 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 15 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 2 |
| 2002 | 10 | 5 |
| 2003 | 9 | 10 |
| 2004 | 11 | 15 |
| 2005 | 7 | 17 |
| 2006 | 7 | 14 |
| 2007 | 9 | 8 |
| 2008 | 7 | 5 |
| 2009 | 8 | 7 |
| 2010 | 6 | 10 |
| 2011 | 3 | 5 |
| 2012 | 2 | 6 |
| 2013 | 3 | 9 |
| 2014 | 8 | 6 |
| 2015 | 1 | 7 |
| 2016 | 4 | 7 |
| 2017 | 5 | 10 |
| 2018 | 6 | 12 |
| 2019 | 4 | 14 |
| 2020 | 15 | 14 |
| 2021 | 8 | 20 |
| 2022 | 8 | 23 |
| 2023 | 15 | 18 |
| 2024 | 13 | 11 |
| 2025 | 10 | 23 |
| 2026 | 11 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalytic hydrogenolysis of a polymer25 Aug 2026US 12,715,826 B2Northwestern University
- Method and system for feeding a liquid organic peroxide to a polymer melt processing equipment18 Aug 2026US 12,709,666 B2Lummus Novolen Technology GmbH
- Low-temperature plastic depolymerization16 Jun 2026US 12,655,265 B2Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
- Composition of polymers derived through the maleation of depolymerized polypropylene2 Jun 2026US 12,643,988 B2GreenMantra Recycling Technologies Ltd.
- Purification of waste plastics based oil via a polymerization19 May 2026US 12,630,768 B2Totalenergies Onetech
- Catalytic depolymerisation of polymeric materials10 Sep 2026US 2026/0265630 A1GreenMantra Recycling Technologies Ltd.
- Continuous process for reducing the molecular weight of ethylene copolymers and terpolymers23 Jul 2026US 2026/0209627 A1Versalis S.P.A.
- Method for producing solubilized polymer and method for producing water absorbent resin18 Jun 2026US 2026/0167795 A1Nippon Shokubai Co., Ltd.
- Nonwoven21 May 2026US 2026/0139417 A1The Procter & Gamble Company
- Method for producing solubilized polymer-containing material, and method for producing water-absorbent resin using solubilized polymer-containing material as portion of raw material14 May 2026US 2026/0131311 A1Nippon Shokubai Co., Ltd.
Most cited
By later US patents
- Hydroprocessing using bulk Group VIII/Group VIB catalysts (HEN-9901)250US 6,162,350 AExxon Research & Engineering Co. · 2000
- Slurry hydroprocessing using bulk multimetallic catalysts185US 6,712,955 B1ExxonMobil Research and Engineering Company · 2004
- Hydroconversion process using bulk group VIII/Group VIB catalysts175US 6,620,313 B1ExxonMobil Research and Engineering Company · 2003
- High melt strength, propylene polymer, process for making it, and use thereof145US 4,916,198 AHimont Incorporated · 1990
- Hydrofining process using bulk group VIII/Group VIB catalysts126US 7,232,515 B1ExxonMobil Research and Engineering Company · 2007