C02F 1/54
Using organic material
Official title: using organic material
C02F1/54 (Using organic material) appears on 2,067 US grants and 1,633 published applications in this corpus.
Search patents in C02F- Granted patents
- 2,067
- Published applications
- 1,633
- Assignees
- 1,046
- Inventors
- 4,161
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 42 | 0 |
| 1977 | 36 | 0 |
| 1978 | 35 | 0 |
| 1979 | 18 | 0 |
| 1980 | 24 | 0 |
| 1981 | 29 | 0 |
| 1982 | 17 | 0 |
| 1983 | 16 | 0 |
| 1984 | 19 | 0 |
| 1985 | 24 | 0 |
| 1986 | 25 | 0 |
| 1987 | 32 | 0 |
| 1988 | 47 | 0 |
| 1989 | 31 | 0 |
| 1990 | 28 | 0 |
| 1991 | 36 | 0 |
| 1992 | 40 | 0 |
| 1993 | 40 | 0 |
| 1994 | 40 | 0 |
| 1995 | 33 | 0 |
| 1996 | 44 | 0 |
| 1997 | 90 | 0 |
| 1998 | 67 | 0 |
| 1999 | 54 | 0 |
| 2000 | 48 | 0 |
| 2001 | 64 | 15 |
| 2002 | 43 | 32 |
| 2003 | 36 | 53 |
| 2004 | 37 | 56 |
| 2005 | 31 | 47 |
| 2006 | 28 | 61 |
| 2007 | 31 | 51 |
| 2008 | 39 | 68 |
| 2009 | 31 | 61 |
| 2010 | 39 | 73 |
| 2011 | 44 | 72 |
| 2012 | 37 | 59 |
| 2013 | 41 | 66 |
| 2014 | 37 | 93 |
| 2015 | 34 | 79 |
| 2016 | 42 | 71 |
| 2017 | 59 | 86 |
| 2018 | 58 | 68 |
| 2019 | 59 | 74 |
| 2020 | 58 | 72 |
| 2021 | 79 | 74 |
| 2022 | 51 | 56 |
| 2023 | 44 | 68 |
| 2024 | 43 | 69 |
| 2025 | 57 | 58 |
| 2026 | 30 | 51 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for processing a slurry29 Sep 2026US 12,747,645 B2Flowback Fluids LLC
- Silica inhibitors for silica inhibition and dispersion22 Sep 2026US 12,741,890 B2Baker Hughes Oilfield Operations LLC
- 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.
- System and method of using nanobubbles in a dewatering process for a liquid-solid stream8 Sep 2026US 12,729,146 B2Moleaer, Inc.
- Coagulating agent of plant origin for water treatment1 Sep 2026US 12,722,992 B2ServiecologíA Y Tratamiento De Aguas, S.L.
- Contaminant Precipitation Compositions and Methods of Use8 Oct 2026US 2026/0308025 A1Locus Solutions Ipco, LLC
- Additive combination for treatment of heavy metals and dioxins in fly ash1 Oct 2026US 2026/0295645 A1Zhejiang University
- Assembly providing gravity fed or pump fed curvilinear motion for polymer release and mixing, including centrally mounting multi-outlet nozzle, overflow rim discharge system, and method for passive stormwater treatment using controlled rotational flow17 Sep 2026US 2026/0274719 A1
- Method and system for controlling biofouling with fluorescent biodispersant3 Sep 2026US 2026/0257946 A1Chemtreat, Inc.
- A treatment method of at least one colloidal toc present in wastewater27 Aug 2026US 2026/0250163 A1Snf Group
Most cited
By later US patents
- Acrylamide-dialkylaminoacrylate-dialkylaminomethacrylate cationic polyelectrolytes and their production187US 4,628,078 AAllied Colloids Limited · 1986
- Water treatment method for heavy oil production150US 6,733,636 B1Ionics, Incorporated · 2004
- Acidized fracturing fluids containing high molecular weight poly(vinylamines) for enhanced oil recovery144US 4,843,118 AAir Products and Chemicals, Inc. · 1989
- Continuous process for the reclamation of waste drilling fluids141US 4,482,459 ANewpark Waste Treatment Systems Inc. · 1984
- Polycationic block copolymer134US 4,719,282 AMiranol Inc. · 1988