C08G 65/30
Post-polymerisation treatment
Official title: Post-polymerisation treatment, e.g. recovery, purification, drying
C08G65/30 (Post-polymerisation treatment) appears on 353 US grants and 243 published applications in this corpus.
Search patents in C08G- Granted patents
- 353
- Published applications
- 243
- Assignees
- 179
- Inventors
- 949
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 9 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 13 | 0 |
| 1993 | 11 | 0 |
| 1994 | 13 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 16 | 0 |
| 1998 | 12 | 0 |
| 1999 | 14 | 0 |
| 2000 | 1 | 0 |
| 2001 | 7 | 0 |
| 2002 | 10 | 8 |
| 2003 | 4 | 11 |
| 2004 | 11 | 15 |
| 2005 | 9 | 10 |
| 2006 | 2 | 9 |
| 2007 | 5 | 5 |
| 2008 | 2 | 8 |
| 2009 | 4 | 8 |
| 2010 | 5 | 17 |
| 2011 | 5 | 8 |
| 2012 | 9 | 10 |
| 2013 | 8 | 7 |
| 2014 | 6 | 18 |
| 2015 | 10 | 11 |
| 2016 | 11 | 12 |
| 2017 | 9 | 8 |
| 2018 | 7 | 9 |
| 2019 | 7 | 10 |
| 2020 | 8 | 6 |
| 2021 | 9 | 13 |
| 2022 | 2 | 10 |
| 2023 | 4 | 11 |
| 2024 | 8 | 4 |
| 2025 | 11 | 10 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing polyalkylene oxide29 Sep 2026US 12,747,321 B2Sumitomo Seika Chemicals Co., Ltd.
- Method for producing polymer4 Aug 2026US 12,698,361 B2Nissan Chemical Corporation
- Processes for purifying polyether polyols using ion exchange resins6 Jan 2026US 12,515,212 B2Covestro LLC
- Preparation process of allyl alcohol polyether with low potassium and sodium content30 Dec 2025US 12,509,550 B2Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd.
- Immobilization of phenolic compounds14 Oct 2025US 12,441,837 B2Spago Nanomedical AB
- Fiber material for cement/concrete reinforcement, method for producing fiber material for cement/concrete reinforcement, and fiber-reinforced cement composition8 Oct 2026US 2026/0308058 A1Toyota Jidosha Kabushiki Kaisha
- New ether-amine compositions and the use thereof as curing agents for epoxy resins23 Jul 2026US 2026/0209427 A1BASF SE
- Method for the deactivation of an acid catalyst during the production process of a polyoxymethylene copolymer23 Jul 2026US 2026/0209432 A1Base SE
- Polyalkylene oxide particles, composition for medicine, composition for formulation, and formulation25 Jun 2026US 2026/0174698 A1Sumitomo Seika Chemicals Co., Ltd.
- Method for preparing water-soluble epoxy resin carbon fiber sizing agent18 Jun 2026US 2026/0167779 A1Jilin University of Chemical Technology
Most cited
By later US patents
- Process for preparing metal cyanide complex catalyst287US 5,158,922 AARCO Chemical Technology, L. P. · 1992
- Double metal cyanide complex catalysts279US 5,470,813 AARCO Chemical Technology, L. P. · 1995
- Highly active double metal cyanide catalysts250US 5,482,908 AARCO Chemical Technology, L. P. · 1996
- Gel injection adjustable keratoplasty98US 5,090,955 AUniversity of Miami · 1992
- Method for treating polypropylene ether and poly-1,2-butylene ether polyols88US 4,355,188 AThe General Tire & Rubber Company · 1982