C08G 69/18
Anionic polymerisation
C08G69/18 (Anionic polymerisation) appears on 206 US grants and 128 published applications in this corpus.
Search patents in C08G- Granted patents
- 206
- Published applications
- 128
- Assignees
- 105
- Inventors
- 451
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 14 | 0 |
| 1987 | 10 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 5 |
| 2003 | 7 | 8 |
| 2004 | 5 | 4 |
| 2005 | 4 | 3 |
| 2006 | 2 | 6 |
| 2007 | 0 | 2 |
| 2008 | 2 | 2 |
| 2009 | 2 | 4 |
| 2010 | 0 | 3 |
| 2011 | 2 | 4 |
| 2012 | 0 | 9 |
| 2013 | 2 | 6 |
| 2014 | 4 | 9 |
| 2015 | 11 | 7 |
| 2016 | 6 | 9 |
| 2017 | 5 | 2 |
| 2018 | 2 | 5 |
| 2019 | 2 | 14 |
| 2020 | 2 | 10 |
| 2021 | 6 | 3 |
| 2022 | 3 | 5 |
| 2023 | 2 | 2 |
| 2024 | 2 | 3 |
| 2025 | 6 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Purification method for laurolactam6 Oct 2026US 12,753,280 B2Hanwha Solutions Corporation
- Particles of polyamide powders and use thereof in powder agglomeration processes30 Dec 2025US 12,509,581 B2Arkema France
- Method for producing a poly(anthranilamide), poly(anthranilamide) and use thereof16 Dec 2025US 12,497,485 B2Covestro Deutschland AG
- Method for preparing polyamide by anion ring-opening polymerization and polyamide prepared thereby24 Jun 2025US 12,338,323 B2Hanwha Solutions Corporation
- System for producing a fully impregnated thermoplastic prepreg3 Jun 2025US 12,319,016 B2
- Method for producing polyamide powder for 3d printing23 Jul 2026US 2026/0209436 A1Arkema France
- Polyamide resin, polyamide resin composition, molded body and method for producing polyamide resin18 Dec 2025US 2025/0382415 A1Kureha Corporation
- Antibacterial nylon 6 material, preparation method therefor and application thereof17 Oct 2024US 2024/0343863 A1China Petroleum & Chemical Corporation
- Purification method for laurolactam7 Mar 2024US 2024/0076450 A1Hanwha Solutions Corporation
- Laurolactam preparation method, synthesizing device therefor, laurolactam composition prepared thereby, and polylaurolactam preparation method using same29 Feb 2024US 2024/0067609 A1Hanwha Solutions Corporation
Most cited
By later US patents
- Pultrusion process for long fiber-reinforced nylon composites48US 5,424,388 AIndustrial Technology Research Institute · 1995
- Graft polymers of .epsilon.-caprolactam37US 5,342,894 AAir Products and Chemicals, Inc. · 1994
- Process for producing compound materials with a polylactam matrix which can be thermally postformed33US 5,895,808 AEMS-Inventa AG · 1999
- Macromonomers having reactive end groups28US 5,670,564 AMaxdem Incorporated · 1997
- Mixing device22US 4,334,783 AShowa Denko K. K. · 1982