C08G 2/08
Polymerisation of formaldehyde
C08G2/08 (Polymerisation of formaldehyde) appears on 51 US grants and 35 published applications in this corpus.
Search patents in C08G- Granted patents
- 51
- Published applications
- 35
- Assignees
- 31
- Inventors
- 144
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 3 |
| 2006 | 2 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 1 |
| 2010 | 1 | 0 |
| 2011 | 2 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 3 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 5 |
| 2023 | 0 | 1 |
| 2024 | 3 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recycling of polyacetal for the production of polyoxymethylene dialkyl ethers22 Sep 2026US 12,742,054 B2Chemcom Investments BV
- Method for producing polyoxymethylene polyoxyalkylene copolymers9 Jun 2026US 12,649,813 B2Power2Polymers GmbH
- Polyoxymethylene composition in food handling applications17 Sep 2024US 12,091,525 B2Celanese International Corporation
- Low emission polyoxymethylene composition26 Mar 2024US 11,939,464 B2Ticona LLC
- Ammonia and ammonium hydroxide stabilizers for paraformaldehyde13 Feb 2024US 11,897,996 B2Celanese International Corporation
- Use of Biomass to Produce Polyoxymethylene Copolymers13 Aug 2026US 2026/0234317 A1Celanese International Corporation
- Aldehyde-ketone polymer, electrode plate and related battery cell, battery and electrical device25 Dec 2025US 2025/0391907 A1Contemporary Amperex Technology (Hong Kong) Limited
- Polyoxymethylene Composition in Food Handling Applications19 Dec 2024US 2024/0417546 A1Celanese International Corporation
- Recycling of polyacetal for the production of polyoxymethylene dialkyl ethers18 May 2023US 2023/0151180 A1Arkema France
- Method for producing polyoxymethylene polyoxyalkylene copolymers22 Dec 2022US 2022/0403087 A1Covestro Intellectual Property GmbH & Co.KG
Most cited
By later US patents
- Process for removing methanol from formaldehyde-containing solutions19US 7,301,055 B2Ticona LLC · 2007
- Process for the polymerization of formaldehyde18US 3,979,480 ASocieta' Italiana Resine S.I.R. S.p.A. · 1976
- Process for preparation of oxymethylene polymers in a homogeneous phase, and use12US 7,943,726 B2Ticona LLC · 2011
- Process for preparing paraformaldehyde9US 4,036,891 A1977
- Method for non-oxidative production of formaldehyde from methanol8US 6,232,507 B1Ticona LLC · 2001