C08L 33/26
Homopolymers or copolymers of acrylamide or methacrylamide
C08L33/26 (Homopolymers or copolymers of acrylamide or methacrylamide) appears on 676 US grants and 854 published applications in this corpus.
Search patents in C08L- Granted patents
- 676
- Published applications
- 854
- Assignees
- 478
- Inventors
- 2,207
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 17 |
| 2004 | 7 | 12 |
| 2005 | 6 | 16 |
| 2006 | 6 | 17 |
| 2007 | 3 | 13 |
| 2008 | 6 | 13 |
| 2009 | 4 | 19 |
| 2010 | 7 | 31 |
| 2011 | 8 | 20 |
| 2012 | 17 | 22 |
| 2013 | 15 | 33 |
| 2014 | 23 | 26 |
| 2015 | 23 | 41 |
| 2016 | 18 | 40 |
| 2017 | 30 | 48 |
| 2018 | 34 | 73 |
| 2019 | 47 | 78 |
| 2020 | 49 | 62 |
| 2021 | 69 | 75 |
| 2022 | 41 | 47 |
| 2023 | 51 | 49 |
| 2024 | 37 | 42 |
| 2025 | 32 | 31 |
| 2026 | 27 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyoxymethylene compositions6 Oct 2026US 12,753,302 B2Delrin USA, LLC
- Compositions and systems for elastic turbulence29 Sep 2026US 12,747,382 B2Schlumberger Technology Corporation
- Method for preparing ultra-fine and uniform acrylamide-based polymer hydrogel filament and use thereof29 Sep 2026US 12,747,517 B2Beijing Taijieweiye Technology Co., Ltd
- Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode, electrode for non-aqueous secondary battery, and non-aqueous secondary battery15 Sep 2026US 12,738,501 B2Zeon Corporation
- Method for forming and 3D printing double network hydrogels using temperature-controlled projection stereolithography4 Aug 2026US 12,698,386 B2Syracuse University
- Crystallization-driven self-strengthening polymers and associated compositions and methods24 Sep 2026US 2026/0286030 A1The Regents of the University of Colorado, a body corporate
- Novel hydrogel having biocompatible and self-adhesive properties10 Sep 2026US 2026/0263654 A1Industry-Academic Cooperation Foundation, Yeungnam University
- Battery electrode and method of making the same3 Sep 2026US 2026/0260897 A1Specialty Operations France
- Systems and methods for lowering water concentration in polyacrylamide-based emulsions27 Aug 2026US 2026/0250446 A1Ace Fluid Solutions
- Natural mineral crystal-based mattress material and preparation method thereof27 Aug 2026US 2026/0250501 A1Zhengqi New Materials Technology(Changzhou) Co., Ltd.
Most cited
By later US patents
- Cross-linked, water-swellable polymer microgels255US 4,172,066 AThe Dow Chemical Company · 1979
- Cross-linked water-swellable polymer particles162US 4,059,552 AThe Dow Chemical Company · 1977
- Polymerizable yellow dyes and their use in opthalmic lenses154US 5,470,932 AAlcon Laboratories, Inc. · 1995
- Water-dispersible hydrophobic thickening agent122US 4,432,881 AThe Dow Chemical Company · 1984
- Medical devices having homogeneous charge density and methods for making same111US 9,170,349 B2Johnson & Johnson Vision Care, Inc. · 2015