B01J 20/267
Cross-linked polymers
Official title: {Cross-linked polymers}
B01J20/267 (Cross-linked polymers) appears on 1,027 US grants and 1,400 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,027
- Published applications
- 1,400
- Assignees
- 611
- Inventors
- 2,717
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 12 |
| 2003 | 14 | 17 |
| 2004 | 10 | 16 |
| 2005 | 7 | 34 |
| 2006 | 10 | 19 |
| 2007 | 11 | 29 |
| 2008 | 13 | 27 |
| 2009 | 15 | 40 |
| 2010 | 21 | 41 |
| 2011 | 10 | 31 |
| 2012 | 25 | 43 |
| 2013 | 29 | 49 |
| 2014 | 39 | 43 |
| 2015 | 35 | 54 |
| 2016 | 48 | 60 |
| 2017 | 39 | 86 |
| 2018 | 70 | 85 |
| 2019 | 62 | 95 |
| 2020 | 82 | 75 |
| 2021 | 66 | 90 |
| 2022 | 48 | 100 |
| 2023 | 59 | 104 |
| 2024 | 64 | 103 |
| 2025 | 76 | 84 |
| 2026 | 43 | 60 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Super absorbent polymer and preparation method thereof6 Oct 2026US 12,752,254 B2LG Chem.Ltd.
- Preparation method of superabsorbent polymer6 Oct 2026US 12,752,255 B2LG Chem.Ltd.
- Continuous polymerization reactor for super absorbent polymer and continuous polymerization reaction system6 Oct 2026US 12,753,249 B2LG Chem.Ltd.
- Particulate water-absorbing agent1 Sep 2026US 12,722,141 B2Nippon Shokubai Co., Ltd.
- Adsorbent resin for removing perfluorinated pollutants from body of water, preparation therefor, and use thereof25 Aug 2026US 12,715,787 B2Sunresin New Materials Co. Ltd.
- Removal of per- and polyfluoroalkyl substances (pfas) from water with meso- and macro-porous gels8 Oct 2026US 2026/0308019 A1The University of Akron
- Photothermal polymeric aerogels for wastewater detoxification and water recycling8 Oct 2026US 2026/0308020 A1University of Kentucky Research Foundation
- Carbon dioxide capture process using hydrogels24 Sep 2026US 2026/0284567 A1Commonwealth Scientific and Industrial Research Organisation
- Method for producing water-absorbent resin particles, water-absorbent resin particles, absorbent material and absorbent article24 Sep 2026US 2026/0284638 A1Sumitomo Seika Chemicals Co., Ltd.
- Novel materials and methods for refining processes17 Sep 2026US 2026/0273436 A1Lihme Protein Solutions ApS
Most cited
By later US patents
- Modified siliceous chromatographic supports159US 4,724,207 ACuno Incorporated · 1988
- Production process for water-absorbing agent141US 6,265,488 B1Nippon Shokubai Co., Ltd. · 2001
- Composite materials comprising supported porous gels116US 7,316,919 B2Nysa Membrane Technologies · 2008
- Polymeric microbeads and method of preparation110US 5,583,162 ABiopore Corporation · 1996
- Method of covalently binding biologically active organic substances to polymeric substances90US 4,415,665 APharmacia Fine Chemicals AB · 1983