C08G 2/10
Polymerisation of cyclic oligomers of formaldehyde
C08G2/10 (Polymerisation of cyclic oligomers of formaldehyde) appears on 97 US grants and 87 published applications in this corpus.
Search patents in C08G- Granted patents
- 97
- Published applications
- 87
- Assignees
- 47
- Inventors
- 229
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 5 | 2 |
| 2003 | 2 | 2 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 4 |
| 2009 | 2 | 2 |
| 2010 | 1 | 2 |
| 2011 | 3 | 2 |
| 2012 | 2 | 1 |
| 2013 | 2 | 1 |
| 2014 | 2 | 12 |
| 2015 | 2 | 2 |
| 2016 | 4 | 16 |
| 2017 | 15 | 3 |
| 2018 | 4 | 4 |
| 2019 | 3 | 4 |
| 2020 | 4 | 6 |
| 2021 | 4 | 1 |
| 2022 | 1 | 6 |
| 2023 | 3 | 4 |
| 2024 | 3 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for the production of stable polyoxymethylene copolymers (cPOM)22 Sep 2026US 12,742,033 B2BASF SE
- Polyoxymethylene-based all-solid-state polymer electrolyte prepared by in-situ ring-opening polymerization and application26 May 2026US 12,640,394 B2Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences
- Photochromic polyurethane laminate29 Jul 2025US 12,372,687 B2HOYA Optical Labs of America, Inc.
- Polyoxymethylene and method of producing same14 May 2024US 11,981,772 B2Asahi Kasei Kabushiki Kaisha
- Oxymethylene-copolymer manufacturing method23 Apr 2024US 11,965,058 B2Mitsubishi Gas Chemical Company, Inc.
- Use of Biomass to Produce Polyoxymethylene Copolymers13 Aug 2026US 2026/0234317 A1Celanese International Corporation
- Method for the deactivation of an acid catalyst during the production process of a polyoxymethylene copolymer23 Jul 2026US 2026/0209432 A1Base SE
- Polyacetal Resin Composition13 Mar 2025US 2025/0084249 A1Asahi Kasei Kabushiki Kaisha
- Liquid monofunctional 1,3-dioxolane copolymers1 Aug 2024US 2024/0254271 A1Wacker Cheimie AG
- Liquid 1,3-dioxolane copolymers2 May 2024US 2024/0141104 A1Wacker Chemie AG
Most cited
By later US patents
- Inorganic reinforcing phase dispersed and bonded to polymer matrix111US 4,251,576 AImperial Chemical Industries PLC · 1981
- Composite materials83US 4,221,697 AImperial Chemical Industries PLC · 1980
- Process for the preparation of polyacetals25US 5,608,030 AHoechst Aktiengesellschaft · 1997
- Process for continuously polymerizing trioxane22US 4,343,929 AMitsubishi Gas Chemical Company, Inc. · 1982
- Process for removing methanol from formaldehyde-containing solutions19US 7,301,055 B2Ticona LLC · 2007