C09K 8/22
Synthetic organic compounds
C09K8/22 (Synthetic organic compounds) appears on 656 US grants and 362 published applications in this corpus.
Search patents in C09K- Granted patents
- 656
- Published applications
- 362
- Assignees
- 214
- Inventors
- 1,011
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 10 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 10 | 0 |
| 1983 | 6 | 0 |
| 1984 | 14 | 0 |
| 1985 | 23 | 0 |
| 1986 | 17 | 0 |
| 1987 | 22 | 0 |
| 1988 | 15 | 0 |
| 1989 | 12 | 0 |
| 1990 | 11 | 0 |
| 1991 | 15 | 0 |
| 1992 | 13 | 0 |
| 1993 | 13 | 0 |
| 1994 | 15 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 17 | 0 |
| 1998 | 10 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 1 |
| 2002 | 8 | 4 |
| 2003 | 11 | 22 |
| 2004 | 20 | 20 |
| 2005 | 8 | 17 |
| 2006 | 15 | 13 |
| 2007 | 10 | 13 |
| 2008 | 8 | 8 |
| 2009 | 14 | 9 |
| 2010 | 7 | 13 |
| 2011 | 7 | 9 |
| 2012 | 10 | 14 |
| 2013 | 9 | 11 |
| 2014 | 11 | 12 |
| 2015 | 5 | 16 |
| 2016 | 10 | 6 |
| 2017 | 16 | 14 |
| 2018 | 16 | 33 |
| 2019 | 18 | 19 |
| 2020 | 31 | 34 |
| 2021 | 33 | 24 |
| 2022 | 23 | 13 |
| 2023 | 17 | 9 |
| 2024 | 16 | 13 |
| 2025 | 15 | 12 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods for freeing differentially stuck pipes12 May 2026US 12,624,271 B2Saudi Arabian Oil Company
- Gemini surfactant as foaming agent for foam drilling28 Apr 2026US 12,612,543 B2King Fahd University of Petroleum and Minerals
- Amphoteric amphiphiles for shale swelling inhibition in oil and gas reservoirs31 Mar 2026US 12,590,238 B1King Fahd University of Petroleum and Minerals
- Polymer-based additives for shale stabilizations, wellbore fluid compositions comprising said additives, and methods of producing said compositions and improving shale stabilizations using said compositions17 Feb 2026US 12,552,977 B2Schlumberger Technology Corporation
- Measuring bottom-hole temperature with smart polymers3 Feb 2026US 12,540,547 B2Saudi Arabian Oil Company
- Temperature-resistant thixotropic agent, and preparation method and use thereof23 Jul 2026US 2026/0209592 A1China University of Petroleum (East China)
- Porous material for wellbore thermal insulation in drilling and its preparation method and application11 Jun 2026US 2026/0159745 A1China Univesity of Petroleum (East China)
- Shale swelling inhibition in wellbore5 Feb 2026US 2026/0035605 A1King Fahd University of Petroleum and Minerals
- Methods for freeing differentially stuck pipes25 Dec 2025US 2025/0388800 A1Saudi Arabian Oil Company
- Pla dispersion as filtration control agent in drilling fluids11 Dec 2025US 2025/0376612 A1LyondellBasell Advanced Polymers Inc.
Most cited
By later US patents
- Methods of consolidating formations or forming chemical casing or both while drilling188US 6,702,044 B2Halliburton Energy Services.Inc. · 2004
- Cementing oil and gas wells using converted drilling fluid181US 4,883,125 AAtlantic Richfield Company · 1989
- Methods of consolidating formations and forming a chemical casing147US 6,823,940 B2Halliburton Energy Services.Inc. · 2004
- Acidized fracturing fluids containing high molecular weight poly(vinylamines) for enhanced oil recovery144US 4,843,118 AAir Products and Chemicals, Inc. · 1989
- Coal slag universal fluid139US 5,337,824 AShell Oil Company · 1994