B01J 20/3276
Copolymers
Official title: {Copolymers}
B01J20/3276 (Copolymers) appears on 163 US grants and 137 published applications in this corpus.
Search patents in B01J- Granted patents
- 163
- Published applications
- 137
- Assignees
- 134
- Inventors
- 463
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 4 |
| 2003 | 2 | 6 |
| 2004 | 3 | 3 |
| 2005 | 2 | 7 |
| 2006 | 1 | 9 |
| 2007 | 3 | 3 |
| 2008 | 2 | 8 |
| 2009 | 6 | 10 |
| 2010 | 5 | 6 |
| 2011 | 1 | 5 |
| 2012 | 8 | 6 |
| 2013 | 8 | 3 |
| 2014 | 3 | 8 |
| 2015 | 5 | 8 |
| 2016 | 3 | 2 |
| 2017 | 6 | 5 |
| 2018 | 2 | 5 |
| 2019 | 2 | 6 |
| 2020 | 7 | 8 |
| 2021 | 4 | 6 |
| 2022 | 3 | 4 |
| 2023 | 4 | 2 |
| 2024 | 3 | 4 |
| 2025 | 3 | 5 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diethylamino ethyl polymers and methods of use2 Jun 2026US 12,643,077 B2Cytiva US LLC
- Superficially porous organic polymer particles19 May 2026US 12,629,656 B2Waters Technologies Corporation
- Liquid polymer solution for treating nonwoven webs27 Jan 2026US 12,533,657 B2Polygreen Ltd
- Magnetic nanoparticles for removal of particulate waste30 Sep 2025US 12,427,501 B2The Texas A&M University System
- Stationary phase for chromatography2 Sep 2025US 12,403,452 B2Daicel Corporation
- Moisture absorption film layered product1 Oct 2026US 2026/0295559 A1Mazda Motor Corporation
- Preparation Method of Super Absorbent Polymer16 Jul 2026US 2026/0199876 A1LG Chem.Ltd.
- Method for producing acidic gas adsorbent sheet and acidic gas adsorbent sheet16 Apr 2026US 2026/0102757 A1Nitto Denko Corporation
- Magnetic nanoparticles for removal of particulate waste29 Jan 2026US 2026/0027547 A1The Texas A&M University System
- Absorbent body and absorbent article27 Nov 2025US 2025/0360490 A1Sumitomo Seika Chemicals Co., Ltd.
Most cited
By later US patents
- Affinity matrices of modified polysaccharide supports427US 5,059,654 ACuno Incorporated · 1991
- Modified siliceous chromatographic supports159US 4,724,207 ACuno Incorporated · 1988
- Composite materials comprising supported porous gels116US 7,316,919 B2Nysa Membrane Technologies · 2008
- Carrier having acrylate copolymer coating for immobilization of bioactive materials115US 4,352,884 AKuraray Co., Ltd. · 1982
- Filter medium having a limited surface negative charge for treating a blood material109US 5,407,581 AAsahi Medical Co., Ltd. · 1995