B01J 20/28047
Gels
Official title: {Gels}
B01J20/28047 (Gels) appears on 394 US grants and 537 published applications in this corpus.
Search patents in B01J- Granted patents
- 394
- Published applications
- 537
- Assignees
- 350
- Inventors
- 1,318
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 6 |
| 2003 | 3 | 9 |
| 2004 | 5 | 14 |
| 2005 | 5 | 12 |
| 2006 | 7 | 8 |
| 2007 | 5 | 11 |
| 2008 | 10 | 18 |
| 2009 | 5 | 13 |
| 2010 | 5 | 18 |
| 2011 | 5 | 11 |
| 2012 | 12 | 10 |
| 2013 | 11 | 15 |
| 2014 | 12 | 17 |
| 2015 | 11 | 18 |
| 2016 | 15 | 16 |
| 2017 | 17 | 29 |
| 2018 | 16 | 40 |
| 2019 | 15 | 39 |
| 2020 | 37 | 25 |
| 2021 | 29 | 37 |
| 2022 | 16 | 40 |
| 2023 | 22 | 22 |
| 2024 | 20 | 41 |
| 2025 | 30 | 33 |
| 2026 | 17 | 34 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Poly(meth)acrylic acid (salt)-based water-absorbing resin, and absorbent body15 Sep 2026US 12,734,502 B2Nippon Shokubai Co., Ltd.
- Preparation method for superabsorbent polymer8 Sep 2026US 12,728,402 B2LG Chem.Ltd.
- Method for preparing lithium extraction absorbent and its application1 Sep 2026US 12,722,138 B2Harbin Institute of Technology
- The method of obtaining polyacrylamide hydrogels through continuous frontal polymerization8 Oct 2026US 2026/0307050 A1Green Evolution Technologies, Inc.
- 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
- High performance co2 adsorbents made from natural silk1 Oct 2026US 2026/0295558 A1Wisconsin Alumni Research Foundation
- Superabsorbent Polymers Based on Citric Acid Having Enhanced Biodegradability and Water Absorptivity1 Oct 2026US 2026/0295560 A1Covestro (Netherlands) B.V.
Most cited
By later US patents
- Plasma concentrate apparatus and method289US 6,905,612 B2Hanuman LLC · 2005
- Rigid porous carbon structures, methods of making, methods of using and products containing same143US 6,099,965 AHyperion Catalysis International, Inc. · 2000
- Process for preparing a hydrogel123US 4,664,857 ANippon Oil Co., Ltd. · 1987
- Composite materials comprising supported porous gels116US 7,316,919 B2Nysa Membrane Technologies · 2008
- Gel-in-matrix containing a fractured hydrogel96US 5,277,915 AFMC Corporation · 1994