C08G 64/40
Post-polymerisation treatment
C08G64/40 (Post-polymerisation treatment) appears on 213 US grants and 147 published applications in this corpus.
Search patents in C08G- Granted patents
- 213
- Published applications
- 147
- Assignees
- 88
- Inventors
- 656
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 0 |
| 2002 | 12 | 4 |
| 2003 | 8 | 8 |
| 2004 | 9 | 1 |
| 2005 | 2 | 2 |
| 2006 | 2 | 4 |
| 2007 | 2 | 2 |
| 2008 | 0 | 8 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 3 | 7 |
| 2012 | 2 | 2 |
| 2013 | 6 | 4 |
| 2014 | 1 | 6 |
| 2015 | 4 | 7 |
| 2016 | 8 | 9 |
| 2017 | 11 | 12 |
| 2018 | 6 | 10 |
| 2019 | 8 | 8 |
| 2020 | 9 | 4 |
| 2021 | 4 | 9 |
| 2022 | 4 | 13 |
| 2023 | 4 | 9 |
| 2024 | 7 | 2 |
| 2025 | 3 | 8 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same16 Jun 2026US 12,655,266 B2LG Chem.Ltd.
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same16 Jun 2026US 12,655,267 B2LG Chem.Ltd.
- Method for producing polycarbonate resin, and molded body29 Jul 2025US 12,371,530 B2Mitsubishi Gas Chemical Company, Inc.
- Method for separating organic zinc catalyst using filtering membrane27 May 2025US 12,312,442 B2LG Chem.Ltd.
- Continuous manufacturing of polyol4 Feb 2025US 12,215,187 B2Saudi Arabian Oil Company
- Surface-active agent1 Oct 2026US 2026/0297250 A1Econic Technologies Ltd.
- Process for producing polycarbonate17 Sep 2026US 2026/0275034 A1Sabic Global Technologies B.V.
- Polymer compound and method for decomposing same, plastic product containing said polymer compound, fiber-reinforced plastic and method for recovering fibers contained therein, and method for producing polyester, polyurethane, or polycarbonate20 Aug 2026US 2026/0242564 A1Kanagawa University
- Polyalkylene carbonate resin composition and method for preparing the same6 Aug 2026US 2026/0226231 A1LG Chem.Ltd.
- Method for producing refined polycarbonate resin19 Mar 2026US 2026/0078217 A1Mitsubishi Gas Chemical Company, Inc.
Most cited
By later US patents
- Process for the preparation of modified polycarbonate molding compositions84US 4,367,186 ABayer Aktiengesellschaft · 1983
- Process for cleaning thermoplasts by friction compacting53US 5,306,803 ABayer Aktiengesellschaft · 1994
- Method for isolating polymer resin from solution slurries45US 6,316,592 B1General Electric Company · 2001
- Process for the preparation of polymers from polymer slurries39US 7,304,125 B2Stratek Plastic Ltd. · 2007
- Removal of alkaline catalysts from polyether polyols and polyalkylene carbonate polyols38US 4,528,364 AThe Dow Chemical Company · 1985