C02F 1/56
Macromolecular compounds
C02F1/56 (Macromolecular compounds) appears on 1,327 US grants and 1,497 published applications in this corpus.
Search patents in C02F- Granted patents
- 1,327
- Published applications
- 1,497
- Assignees
- 777
- Inventors
- 3,020
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 16 | 0 |
| 1996 | 25 | 0 |
| 1997 | 76 | 0 |
| 1998 | 50 | 0 |
| 1999 | 46 | 0 |
| 2000 | 41 | 0 |
| 2001 | 54 | 13 |
| 2002 | 37 | 28 |
| 2003 | 28 | 46 |
| 2004 | 32 | 52 |
| 2005 | 26 | 41 |
| 2006 | 23 | 53 |
| 2007 | 27 | 46 |
| 2008 | 33 | 66 |
| 2009 | 30 | 56 |
| 2010 | 36 | 70 |
| 2011 | 42 | 70 |
| 2012 | 37 | 55 |
| 2013 | 41 | 61 |
| 2014 | 37 | 87 |
| 2015 | 29 | 71 |
| 2016 | 37 | 64 |
| 2017 | 53 | 79 |
| 2018 | 52 | 65 |
| 2019 | 51 | 69 |
| 2020 | 53 | 70 |
| 2021 | 74 | 67 |
| 2022 | 50 | 53 |
| 2023 | 40 | 59 |
| 2024 | 42 | 62 |
| 2025 | 50 | 50 |
| 2026 | 26 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Apparatus and method for treating waste water1 Sep 2026US 12,722,993 B2Samsung E&A Co., Ltd.
- 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
- A treatment method of at least one colloidal toc present in wastewater27 Aug 2026US 2026/0250163 A1Snf Group
- Modulable method for treating an aqueous effluent20 Aug 2026US 2026/0242260 A1Snf Group
- Method and system for cleaning polluted marine exhaust gas cleaning liquid20 Aug 2026US 2026/0242265 A1Alfa Laval Corporate AB
Most cited
By later US patents
- Water treatment method for heavy oil production150US 6,733,636 B1Ionics, Incorporated · 2004
- Continuous process for the reclamation of waste drilling fluids141US 4,482,459 ANewpark Waste Treatment Systems Inc. · 1984
- Monitoring and dosage control of tagged polymers in cooling water systems97US 5,171,450 ANalco Chemical Company · 1992
- Method of using hydroxycarboxylic acids or related compounds for treating skin changes associated with intrinsic and extrinsic aging97US 6,767,924 B2Tristrata Technology, Inc. · 2004
- Water treatment process for membranes94US 6,416,668 B12002