C09K 8/592
Compositions used in combination with generated heat
Official title: Compositions used in combination with generated heat, e.g. by steam injection
C09K8/592 (Compositions used in combination with generated heat) appears on 428 US grants and 351 published applications in this corpus.
Search patents in C09K- Granted patents
- 428
- Published applications
- 351
- Assignees
- 133
- Inventors
- 725
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 15 | 0 |
| 1979 | 8 | 0 |
| 1980 | 10 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 13 | 0 |
| 1985 | 7 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 11 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 74 |
| 2003 | 8 | 18 |
| 2004 | 47 | 7 |
| 2005 | 16 | 1 |
| 2006 | 10 | 0 |
| 2007 | 1 | 4 |
| 2008 | 3 | 4 |
| 2009 | 0 | 3 |
| 2010 | 6 | 8 |
| 2011 | 1 | 6 |
| 2012 | 4 | 10 |
| 2013 | 4 | 10 |
| 2014 | 6 | 15 |
| 2015 | 5 | 24 |
| 2016 | 6 | 19 |
| 2017 | 11 | 17 |
| 2018 | 20 | 19 |
| 2019 | 13 | 17 |
| 2020 | 10 | 20 |
| 2021 | 24 | 11 |
| 2022 | 12 | 14 |
| 2023 | 13 | 12 |
| 2024 | 23 | 14 |
| 2025 | 11 | 14 |
| 2026 | 9 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lignin-based compositions and related hydrocarbon separation methods28 Jul 2026US 12,692,429 B2LignoSol IP Limited
- Compositions and methods of use of viscoelastic surfactants and nanoparticles for high temperature water conformance applications23 Jun 2026US 12,662,621 B1Schlumberger Technology Corporation
- Lignin-based compositions and related methods26 May 2026US 12,637,605 B2LignoSol IP Limited
- Microbially enhanced thermal oil recovery26 May 2026US 12,637,932 B29668241 Canada Inc.
- Systems and methods for recovering ammonia from a subsurface formation5 May 2026US 12,618,305 B2King Fahd University of Petroleum and Minerals
- Microbially enhanced thermal oil recovery3 Sep 2026US 2026/0258720 A19668241 Canada Inc.
- Systems and methods for recovering ammonia from a subsurface formation13 Aug 2026US 2026/0235015 A1King Fahd University of Petroleum and Minerals
- Method for stimulating injection wells using reducing agents9 Jul 2026US 2026/0193528 A1Jgs Resources, LLC
- Method for in-situ removal of reservoir plugging using microorganisms and in-situ reservoir oil displacement, and iron-reducing bacterium activator25 Jun 2026US 2026/0176523 A1China University of Geosciences (Beijing)
- Application of co for recovery of heavy and ultra heavy oils11 Jun 2026US 2026/0159750 A1
Most cited
By later US patents
- In situ recovery from a kerogen and liquid hydrocarbon containing formation332US 7,011,154 B2Shell Oil Company · 2006
- In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing311US 6,712,136 B2Shell Oil Company · 2004
- In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids298US 6,581,684 B2Shell Oil Company · 2003
- In situ shale-oil recovery process288US 4,458,757 AExxon Research & Engineering Co. · 1984
- In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate285US 6,688,387 B1Shell Oil Company · 2004