C08G 69/02
Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
C08G69/02 (Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids) appears on 3,518 US grants and 3,011 published applications in this corpus.
Search patents in C08G- Granted patents
- 3,518
- Published applications
- 3,011
- Assignees
- 1,266
- Inventors
- 7,599
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 69 | 0 |
| 1977 | 58 | 0 |
| 1978 | 64 | 0 |
| 1979 | 38 | 0 |
| 1980 | 59 | 0 |
| 1981 | 56 | 0 |
| 1982 | 30 | 0 |
| 1983 | 48 | 0 |
| 1984 | 46 | 0 |
| 1985 | 36 | 0 |
| 1986 | 65 | 0 |
| 1987 | 65 | 0 |
| 1988 | 66 | 0 |
| 1989 | 66 | 0 |
| 1990 | 84 | 0 |
| 1991 | 77 | 0 |
| 1992 | 78 | 0 |
| 1993 | 75 | 0 |
| 1994 | 90 | 0 |
| 1995 | 66 | 0 |
| 1996 | 80 | 0 |
| 1997 | 75 | 0 |
| 1998 | 74 | 0 |
| 1999 | 77 | 0 |
| 2000 | 56 | 0 |
| 2001 | 56 | 7 |
| 2002 | 49 | 54 |
| 2003 | 58 | 57 |
| 2004 | 54 | 64 |
| 2005 | 33 | 42 |
| 2006 | 32 | 45 |
| 2007 | 25 | 59 |
| 2008 | 14 | 53 |
| 2009 | 16 | 60 |
| 2010 | 37 | 117 |
| 2011 | 22 | 101 |
| 2012 | 53 | 124 |
| 2013 | 66 | 159 |
| 2014 | 126 | 137 |
| 2015 | 112 | 147 |
| 2016 | 94 | 184 |
| 2017 | 127 | 175 |
| 2018 | 112 | 186 |
| 2019 | 117 | 158 |
| 2020 | 149 | 181 |
| 2021 | 114 | 184 |
| 2022 | 98 | 169 |
| 2023 | 98 | 175 |
| 2024 | 92 | 151 |
| 2025 | 106 | 135 |
| 2026 | 60 | 87 |
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
- Flexible hydrophilic aspartic resin and emulsion15 Sep 2026US 12,735,532 B1Shenzhen Feiyang Protech Corp., Ltd
- Method and device for preparing modified poly (m-phenylene isophthalamide) (PMIA) fiber by continuous polymerization-dry-wet spinning1 Sep 2026US 12,723,329 B2Zhuzhou Times New Material Technology Co., Ltd.
- Polyamide compositions25 Aug 2026US 12,714,091 B2Celanese Polymers Holding, Inc.
- Copolyamide and polymer film containing at least one diamine, a dicarboxylic acid and 1,5-diamino-3-oxapentane25 Aug 2026US 12,715,963 B2BASF SE
- Contorted polyamide membranes and methods of use thereof8 Oct 2026US 2026/0307019 A1University of Houston System
- Integrated System and Process for Producing High Performance Polyamides from Circular Components8 Oct 2026US 2026/0308322 A1Celanese Polymers Holding, Inc.
- Polyamide block copolymer, polyamide block copolymer composition, and molded article8 Oct 2026US 2026/0308332 A1Kuraray Co., Ltd.
- High melt temperature soluble semi-crystalline polyamides1 Oct 2026US 2026/0297255 A1Syensqo Specialty Polymers USA, LLC
- Polyamides produced from used tires1 Oct 2026US 2026/0297256 A1
Most cited
By later US patents
- Interfacially synthesized reverse osmosis membrane312US 4,277,344 AFilmtec Corporation · 1981
- Biodegradable, anionic polymers derived from the amino acid L-tyrosine283US 6,120,491 AThe State University of Rutgers · 2000
- Ester-terminated polyamides of polymerized fatty acids useful in formulating transparent gels in low polarity liquids271US 5,783,657 AUnion Camp Corporation · 1998
- Macromolecular highly branched homogeneous compound based on lysine units245US 4,289,872 AAllied Corporation · 1981
- Non-peptide polyamino acid bioerodible polymers194US 4,638,045 AMassachusetts Institute of Technology · 1987