C09K 8/64
Oil-based compositions
C09K8/64 (Oil-based compositions) appears on 459 US grants and 493 published applications in this corpus.
Search patents in C09K- Granted patents
- 459
- Published applications
- 493
- Assignees
- 163
- Inventors
- 794
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 1 |
| 2002 | 1 | 3 |
| 2003 | 5 | 6 |
| 2004 | 3 | 6 |
| 2005 | 2 | 16 |
| 2006 | 5 | 13 |
| 2007 | 11 | 14 |
| 2008 | 12 | 9 |
| 2009 | 11 | 19 |
| 2010 | 7 | 16 |
| 2011 | 17 | 16 |
| 2012 | 7 | 17 |
| 2013 | 16 | 22 |
| 2014 | 21 | 33 |
| 2015 | 14 | 27 |
| 2016 | 14 | 50 |
| 2017 | 41 | 52 |
| 2018 | 31 | 30 |
| 2019 | 26 | 31 |
| 2020 | 37 | 26 |
| 2021 | 29 | 33 |
| 2022 | 14 | 13 |
| 2023 | 24 | 11 |
| 2024 | 14 | 15 |
| 2025 | 10 | 11 |
| 2026 | 8 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reverse emulsion for hydraulic fracturing22 Sep 2026US 12,742,112 B2Snf Group
- Electro-hydrofracturing using electrically conductive proppants and related methods14 Jul 2026US 12,680,014 B2Eden GeoPower, Inc.
- Multi-functional compositions for enhanced oil and gas recovery and other petroleum industry applications7 Jul 2026US 12,674,087 B2Locus Solutions Ipco, LLC
- Hydraulic fracturing methods utilizing fracturing fluids comprising coke proppant particles and low-base-viscosity carrier fluid9 Jun 2026US 12,649,875 B2ExxonMobil Technology and Engineering Company
- Methods for producing hydrocarbon fluids with reduced water-oil ratio by utilizing oil-wet petroleum coke proppant particles during hydraulic fracturing9 Jun 2026US 12,650,066 B2ExxonMobil Technology and Engineering Company
- Pre-split roof caving method based on collaboration of foam fracturing and blasting for coal mines18 Jun 2026US 2026/0168377 A1Shandong University of Science and Technology
- Proppant particles formed from fluid coke and flexicoke, fracturing fluids comprising such proppant particles, and methods related thereto23 Apr 2026US 2026/0109896 A1ExxonMobil Technology and Engineering Company
- Infused and coated proppant containing chemical treatment agents and methods of using same5 Mar 2026US 2026/0062604 A1Carbo Ceramics Inc.
- Self-invertible polymeric water-in-oil emulsion and its use as friction reducers2 Oct 2025US 2025/0304852 A1Sterling Specialty Chemicals Holding UK Limited
- Surfactants for oil and gas production18 Sep 2025US 2025/0289995 A1AdvanSix Resins & Chemicals LLC
Most cited
By later US patents
- Compositions and methods for hydraulic fracturing351US 6,169,058 ABJ Services Company · 2001
- Method and apparatus for deliberate fluid removal by capillary imbibition181US 6,283,212 B1Schlumberger Technology Corporation · 2001
- Hydrocarbon-based fracturing fluid composition, system, and method174US 9,850,422 B2ProStim Labs, LLC · 2017
- Methods using particulates coated with treatment chemical partitioning agents122US 7,261,156 B2Halliburton Energy Services.Inc. · 2007
- Breaking of gelled organic liquids117US 3,990,978 AThe Dow Chemical Company · 1976