C09K 8/66
Compositions based on water or polar solvents
Official title: Compositions based on water or polar solvents (C09K8/64 takes precedence)
C09K8/66 (Compositions based on water or polar solvents) appears on 2,513 US grants and 2,940 published applications in this corpus.
Search patents in C09K- Granted patents
- 2,513
- Published applications
- 2,940
- Assignees
- 559
- Inventors
- 3,317
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 13 | 0 |
| 1985 | 17 | 0 |
| 1986 | 11 | 0 |
| 1987 | 13 | 0 |
| 1988 | 11 | 0 |
| 1989 | 15 | 0 |
| 1990 | 15 | 0 |
| 1991 | 11 | 0 |
| 1992 | 12 | 0 |
| 1993 | 23 | 0 |
| 1994 | 9 | 0 |
| 1995 | 17 | 0 |
| 1996 | 12 | 0 |
| 1997 | 11 | 0 |
| 1998 | 10 | 0 |
| 1999 | 18 | 0 |
| 2000 | 11 | 0 |
| 2001 | 25 | 3 |
| 2002 | 17 | 20 |
| 2003 | 18 | 43 |
| 2004 | 26 | 49 |
| 2005 | 19 | 71 |
| 2006 | 49 | 117 |
| 2007 | 58 | 87 |
| 2008 | 50 | 127 |
| 2009 | 67 | 106 |
| 2010 | 98 | 124 |
| 2011 | 91 | 98 |
| 2012 | 89 | 142 |
| 2013 | 75 | 126 |
| 2014 | 100 | 146 |
| 2015 | 98 | 148 |
| 2016 | 91 | 210 |
| 2017 | 137 | 202 |
| 2018 | 155 | 199 |
| 2019 | 156 | 183 |
| 2020 | 155 | 179 |
| 2021 | 158 | 161 |
| 2022 | 157 | 106 |
| 2023 | 140 | 91 |
| 2024 | 96 | 97 |
| 2025 | 75 | 70 |
| 2026 | 49 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Contaminant remediation with functionalized (meth)acrylic polymer or copolymer macroparticulates and systems related thereto6 Oct 2026US 12,753,257 B2Countertrace LLC
- Method of fracturing using a xanthan/guar gum containing fluid6 Oct 2026US 12,753,361 B1Sunita Hydrocolloids Inc.
- Extended- and multimodal-release compositions25 Aug 2026US 12,715,801 B2Finoric, LLC
- Method for improving oil and gas well productivity and encapsulated lubricating frac fluid additive by lubrication of stimulated reservoir volume25 Aug 2026US 12,716,321 B2Saudi Arabian Oil Company
- Cavitation, dissolver, and sand integration for wellbore descaling25 Aug 2026US 12,716,328 B1Saudi Arabian Oil Company
- Particulate compositions for iron sulfide remediation1 Oct 2026US 2026/0297419 A1ChampionX LLC
- Surfactants, surfactant compositions, and methods of using thereof24 Sep 2026US 2026/0286225 A1Chevron U.S.A.Inc.
- Electrochemical reduction of co2 emissions to a green reduction product and its salts24 Sep 2026US 2026/0286539 A1Saudi Arabian Oil Company
- Method for injecting an aqueous polymer solution into an underground formation10 Sep 2026US 2026/0265603 A1Snf Group
- Systems and methods for recovering ammonia from a subsurface formation13 Aug 2026US 2026/0235015 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Control of particulate flowback in subterranean wells379US 5,330,005 ADowell Schlumberger Incorporated · 1994
- Control of particulate flowback in subterranean wells372US 5,501,275 ADowell, a division of Schlumberger Technology Corporation · 1996
- Control of particulate flowback in subterranean wells358US 5,439,055 ADowell, a division of Schlumberger Technology Corporation · 1995
- Methods for limiting the inflow of formation water and for stimulating subterranean formations350US 5,979,557 ASchlumberger Technology Corporation · 1999
- Formation treatment method using deformable particles341US 6,330,916 B1BJ Services Company · 2001