C09K 8/703
Foams
Official title: {Foams}
C09K8/703 (Foams) appears on 313 US grants and 323 published applications in this corpus.
Search patents in C09K- Granted patents
- 313
- Published applications
- 323
- Assignees
- 115
- Inventors
- 615
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 5 |
| 2003 | 2 | 13 |
| 2004 | 8 | 7 |
| 2005 | 7 | 12 |
| 2006 | 15 | 24 |
| 2007 | 8 | 14 |
| 2008 | 9 | 13 |
| 2009 | 7 | 6 |
| 2010 | 11 | 14 |
| 2011 | 10 | 11 |
| 2012 | 8 | 13 |
| 2013 | 11 | 12 |
| 2014 | 13 | 11 |
| 2015 | 7 | 11 |
| 2016 | 5 | 17 |
| 2017 | 9 | 10 |
| 2018 | 15 | 22 |
| 2019 | 13 | 13 |
| 2020 | 18 | 16 |
| 2021 | 20 | 20 |
| 2022 | 13 | 15 |
| 2023 | 16 | 12 |
| 2024 | 17 | 16 |
| 2025 | 11 | 9 |
| 2026 | 9 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for hydraulic fracturing of conventional and unconventional reservoirs by introducing energized fluid8 Sep 2026US 12,729,617 B2Schlumberger Technology Corporation
- Foamed fracturing fluid with scale protection1 Sep 2026US 12,723,189 B1Halliburton Energy Services.Inc.
- Systems and methods for recovering ammonia from a subsurface formation5 May 2026US 12,618,305 B2King Fahd University of Petroleum and Minerals
- Compositions for single-stage treatment of siliceous subterranean formations17 Mar 2026US 12,577,450 B2Schlumberger Technology Corporation
- Surfactants for oil and gas production17 Mar 2026US 12,577,452 B2AdvanSix Resins & Chemicals LLC
- Method for single-stage treatment of siliceous subterranean formations13 Aug 2026US 2026/0234465 A1Schlumberger Technology Corporation
- Systems and methods for recovering ammonia from a subsurface formation13 Aug 2026US 2026/0235015 A1King Fahd University of Petroleum and Minerals
- Co2 foam fluids for fracturing applications18 Jun 2026US 2026/0167857 A1Beijing Huamei, Inc.
- 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
- High-temperature foam fracturing fluid with synthetic polymer14 May 2026US 2026/0132330 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Formation fracturing with stable foam255US 3,937,283 AMinerals Management, Inc. · 1976
- Unique method of hydraulic fracturing213US 5,402,846 AMobil Oil Corporation · 1995
- Foamed well cement slurries, additives and methods177US 6,547,871 B2Halliburton Energy Services.Inc. · 2003
- Foamed well cement slurries, additives and methods174US 6,367,550 B1Halliburton Energy Service, Inc. · 2002
- Hydrocarbon-based fracturing fluid composition, system, and method174US 9,850,422 B2ProStim Labs, LLC · 2017