C02F 3/108
Immobilising gels, polymers or the like
Official title: {Immobilising gels, polymers or the like}
C02F3/108 (Immobilising gels, polymers or the like) appears on 160 US grants and 192 published applications in this corpus.
Search patents in C02F- Granted patents
- 160
- Published applications
- 192
- Assignees
- 156
- Inventors
- 536
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 1 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 4 |
| 2003 | 3 | 5 |
| 2004 | 2 | 2 |
| 2005 | 4 | 1 |
| 2006 | 4 | 5 |
| 2007 | 2 | 8 |
| 2008 | 3 | 3 |
| 2009 | 0 | 7 |
| 2010 | 6 | 4 |
| 2011 | 4 | 5 |
| 2012 | 3 | 4 |
| 2013 | 6 | 6 |
| 2014 | 3 | 7 |
| 2015 | 3 | 5 |
| 2016 | 2 | 8 |
| 2017 | 4 | 10 |
| 2018 | 8 | 6 |
| 2019 | 5 | 7 |
| 2020 | 9 | 14 |
| 2021 | 6 | 15 |
| 2022 | 6 | 11 |
| 2023 | 8 | 14 |
| 2024 | 12 | 19 |
| 2025 | 7 | 14 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Biofilm reactor having at least one weighted member22 Sep 2026US 12,741,894 B2
- Efficient nitrogen and phosphorus removal process system for mariculture tail water treatment15 Sep 2026US 12,735,339 B2Tianjin Research Institute for Water Transport Engineering, M.O.T.
- Straight-line sewage treatment system for enhanced treatment of low C/N domestic sewage31 Mar 2026US 12,590,019 B2Tongji University
- Biofilter block and use thereof for wastewater treatment10 Mar 2026US 12,570,558 B2Premier Tech Eau Et Environnement LtéE
- Biofilm reactor for treating wastewater7 Oct 2025US 12,434,988 B2
- Media for use in wastewater treatment8 Oct 2026US 2026/0308032 A1Technologies Bionest Inc.
- Biofilms encapsulated with sol-gel30 Jul 2026US 2026/0218115 A1University of Iowa Research Foundation
- Wastewater treatment devices, systems, and methods16 Jul 2026US 2026/0200778 A1University of Washington
- System and method for removal of phosphorus from a water source21 May 2026US 2026/0138903 A1University of Massachusetts
- Biofilm reactor for treating wastewater29 Jan 2026US 2026/0028258 A1
Most cited
By later US patents
- Waste water treatment apparatus84US 6,007,712 AKuraray Co., Ltd. · 1999
- Process for treatment of aqueous environments containing a water soluble polymer74US 6,623,643 B2Microtek Medical Holdings, Inc. · 2003
- Polyvinyl alcohol hydrogel and process for producing the same71US 6,139,963 AKuraray Co., Ltd. · 2000
- Microorganisms immobilized in chitosan crosslinked with lignosulphonate for purification of waste water61US 6,051,411 ANational Research Council of Canada · 2000
- Support containing particulate adsorbent and microorganisms for removal of pollutants50US 5,580,770 AAlliedSignal Inc. · 1996