C08G 69/04
Preparatory processes
C08G69/04 (Preparatory processes) appears on 301 US grants and 268 published applications in this corpus.
Search patents in C08G- Granted patents
- 301
- Published applications
- 268
- Assignees
- 189
- Inventors
- 863
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 10 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 15 | 0 |
| 2001 | 17 | 3 |
| 2002 | 18 | 23 |
| 2003 | 25 | 18 |
| 2004 | 26 | 21 |
| 2005 | 13 | 14 |
| 2006 | 6 | 5 |
| 2007 | 5 | 9 |
| 2008 | 5 | 6 |
| 2009 | 0 | 3 |
| 2010 | 8 | 6 |
| 2011 | 2 | 8 |
| 2012 | 1 | 5 |
| 2013 | 8 | 17 |
| 2014 | 17 | 8 |
| 2015 | 4 | 7 |
| 2016 | 5 | 12 |
| 2017 | 9 | 16 |
| 2018 | 5 | 11 |
| 2019 | 8 | 7 |
| 2020 | 8 | 8 |
| 2021 | 3 | 12 |
| 2022 | 1 | 12 |
| 2023 | 6 | 11 |
| 2024 | 6 | 10 |
| 2025 | 5 | 9 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High molecular weight polyamides and CoPolyamides with uniform RV and low gel content28 Apr 2026US 12,612,491 B2Ascend Performance Materials Operations LLC
- Preparation method of Ti3C2TX MXene quantum dot (MQD)-modified polyamide (PA) reverse-osmosis (RO) membrane7 Apr 2026US 12,594,529 B2Research Institute of Chemical Defense, PLA Academy of Military Sciences
- Method for the continuous preparation of polyamide prepolymers24 Mar 2026US 12,583,969 B2Arkema France
- Process and apparatus for direct crystallization of polycondesates10 Mar 2026US 12,570,806 B2Polymetrix AG
- Lipidated poly(amino acid) nanostructures30 Dec 2025US 12,509,552 B2The Curators of the University of Missouri
- Renewably derived polyamides and methods of making the same13 Aug 2026US 2026/0234328 A1Wilmar Trading Pte. Ltd.
- Condition-exploration microreactor system and process condition optimization method6 Aug 2026US 2026/0225062 A1Hitachi Plant Services Co., Ltd.
- Polyamide fiber23 Jul 2026US 2026/0209997 A1Toray Industries, Inc.
- Amphiphilic poly(amino acid) linear block copolymers and nanoparticles thereof for drug delivery applications9 Jul 2026US 2026/0191797 A1Nanothera Biosciences, Inc.
- Cationic polymer and use for biomolecule delivery14 May 2026US 2026/0132254 A1GenEdit Inc.
Most cited
By later US patents
- Polyamide chains of precise length101US 6,552,167 B1Gryphon Therapeutics, Inc. · 2003
- Water-dissipatable polyesters and amides containing near infrared fluorescent compounds copolymerized therein74US 5,423,432 AEastman Chemical Company · 1995
- Binder for mineral wool products61US 6,878,800 B2Rockwool International A/S · 2005
- Process for preparing polyamides44US 6,069,228 AE. I. Du Pont de Nemours and Company · 2000
- Polyester bottle resins having reduced frictional properties and methods for making the same42US 6,500,890 B2Wellman, Inc. · 2002