C09K 8/06
Clay-free compositions
Official title: Clay-free compositions (containing inorganic compounds only C09K8/05)
C09K8/06 (Clay-free compositions) appears on 1,122 US grants and 973 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,122
- Published applications
- 973
- Assignees
- 325
- Inventors
- 1,718
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 11 | 0 |
| 1984 | 19 | 0 |
| 1985 | 24 | 0 |
| 1986 | 20 | 0 |
| 1987 | 13 | 0 |
| 1988 | 18 | 0 |
| 1989 | 11 | 0 |
| 1990 | 10 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 9 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 36 | 0 |
| 1998 | 23 | 0 |
| 1999 | 13 | 0 |
| 2000 | 23 | 0 |
| 2001 | 21 | 7 |
| 2002 | 23 | 17 |
| 2003 | 15 | 34 |
| 2004 | 28 | 44 |
| 2005 | 16 | 30 |
| 2006 | 29 | 39 |
| 2007 | 25 | 26 |
| 2008 | 12 | 26 |
| 2009 | 20 | 32 |
| 2010 | 29 | 36 |
| 2011 | 30 | 43 |
| 2012 | 17 | 38 |
| 2013 | 26 | 41 |
| 2014 | 31 | 49 |
| 2015 | 33 | 48 |
| 2016 | 22 | 60 |
| 2017 | 42 | 53 |
| 2018 | 53 | 73 |
| 2019 | 70 | 73 |
| 2020 | 64 | 61 |
| 2021 | 58 | 31 |
| 2022 | 41 | 24 |
| 2023 | 34 | 24 |
| 2024 | 27 | 29 |
| 2025 | 22 | 23 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Shale hydration inhibitors and subterranean treatment fluids containing them29 Sep 2026US 12,747,383 B2Lamberti SPA
- Fluid loss control additives for drilling fluids14 Jul 2026US 12,680,400 B2Halliburton Energy Services.Inc.
- Downhole methods and compositions used in such2 Jun 2026US 12,644,040 B2Dorf Ketal Chemicals Fze
- Downhole methods and compositions used in such2 Jun 2026US 12,644,041 B2Dorf Ketal Chemicals Fze
- Downhole methods and compositions used in such19 May 2026US 12,630,758 B2Dorf Ketal Chemicals Fze
- High temperature universal fluids and methods and systems related thereto1 Oct 2026US 2026/0297415 A1Aramco Services Company
- Aqueous drilling fluid for reducing bitumen accretion27 Aug 2026US 2026/0250445 A1Secure Speciality Chemicals Corp.
- Drilling fluids utilizing a salt-tolerant lubricant and methods of use therefor9 Jul 2026US 2026/0193511 A1Saudi Arabian Oil Company
- Downstream uses for briquettes and other forms of powder from asphalt shingle waste18 Jun 2026US 2026/0167856 A1Bmic LLC
- Method and system for producing core-shell microcapsules for downhole applications using microfluidic-based solvent evaporation11 Jun 2026US 2026/0158463 A1Aramco Innovations LLC
Most cited
By later US patents
- Viscoelastic surfactant fluids and related methods of use217US 6,258,859 B1Rhodia Inc. · 2001
- Well treatment process210US 4,957,165 AConoco Inc. · 1990
- Well drilling and servicing fluids and methods of removing filter cake deposited thereby200US 6,494,263 B2Halliburton Energy Services.Inc. · 2002
- Methods of consolidating formations or forming chemical casing or both while drilling188US 6,702,044 B2Halliburton Energy Services.Inc. · 2004
- Well drilling and servicing fluids and methods of removing filter cake deposited thereby185US 6,422,314 B1Halliburton Energy Services.Inc. · 2002