C08G 2/00
Addition polymers of aldehydes or cyclic oligomers thereof or of ketones
Official title: Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
C08G2/00 (Addition polymers of aldehydes or cyclic oligomers thereof or of ketones) appears on 396 US grants and 236 published applications in this corpus.
Search patents in C08G- Granted patents
- 396
- Published applications
- 236
- Assignees
- 149
- Inventors
- 769
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 10 | 0 |
| 1978 | 15 | 0 |
| 1979 | 10 | 0 |
| 1980 | 15 | 0 |
| 1981 | 9 | 0 |
| 1982 | 12 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 10 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 3 |
| 2002 | 10 | 8 |
| 2003 | 10 | 7 |
| 2004 | 6 | 6 |
| 2005 | 1 | 7 |
| 2006 | 6 | 6 |
| 2007 | 3 | 8 |
| 2008 | 2 | 14 |
| 2009 | 5 | 8 |
| 2010 | 7 | 7 |
| 2011 | 8 | 7 |
| 2012 | 5 | 5 |
| 2013 | 4 | 5 |
| 2014 | 6 | 21 |
| 2015 | 10 | 11 |
| 2016 | 8 | 22 |
| 2017 | 23 | 9 |
| 2018 | 10 | 10 |
| 2019 | 5 | 11 |
| 2020 | 10 | 10 |
| 2021 | 7 | 5 |
| 2022 | 4 | 14 |
| 2023 | 6 | 11 |
| 2024 | 11 | 11 |
| 2025 | 2 | 7 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08G 2/18Copolymerisation of aldehydes or ketones139
- C08G 2/10Polymerisation of cyclic oligomers of formaldehyde97
- C08G 2/30Chemical modification by after-treatment97
- C08G 2/06Catalysts63
- C08G 2/08Polymerisation of formaldehyde51
- C08G 2/38Block or graft polymers prepared by polymerisation of aldehydes or ketones on40
- C08G 2/14Polymerisation of single aldehydes not provided for in groups c08g2/08 - c08g2/1239
- C08G 2/28Post-polymerisation treatments38
Recent patents
- Method for the production of stable polyoxymethylene copolymers (cPOM)22 Sep 2026US 12,742,033 B2BASF SE
- 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-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
- Polyimide resin molded body and production method for same31 Mar 2026US 12,590,184 B2Toyo Seikan Group Holdings, Ltd.
- 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
- Secondary battery9 Apr 2026US 2026/0100368 A1Daikin Industries, Ltd.
- Aldehyde-ketone polymer, electrode plate and related battery cell, battery and electrical device25 Dec 2025US 2025/0391907 A1Contemporary Amperex Technology (Hong Kong) Limited
- Separator, battery cell, battery, and electric device13 Nov 2025US 2025/0349981 A1Contemporary Amperex Technology Co., Limited
Most cited
By later US patents
- Compositions and methods for use in three dimensional model printing133US 7,183,335 B2Objet Geometries Ltd. · 2007
- Polymeric acetal carboxylates116US 4,144,226 AMonsanto Company · 1979
- Inorganic reinforcing phase dispersed and bonded to polymer matrix111US 4,251,576 AImperial Chemical Industries PLC · 1981
- Compositions and methods for use in three dimensional model printing96US 7,479,510 B2Objet Geometries Ltd. · 2009
- Composite materials83US 4,221,697 AImperial Chemical Industries PLC · 1980