C09K 8/05
Containing inorganic compounds only
Official title: containing inorganic compounds only, e.g. mixtures of clay and salt
C09K8/05 (Containing inorganic compounds only) appears on 97 US grants and 91 published applications in this corpus.
Search patents in C09K- Granted patents
- 97
- Published applications
- 91
- Assignees
- 51
- Inventors
- 238
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 3 | 3 |
| 2009 | 0 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 5 |
| 2013 | 4 | 4 |
| 2014 | 3 | 3 |
| 2015 | 3 | 1 |
| 2016 | 2 | 1 |
| 2017 | 4 | 14 |
| 2018 | 6 | 11 |
| 2019 | 10 | 6 |
| 2020 | 4 | 8 |
| 2021 | 10 | 0 |
| 2022 | 5 | 5 |
| 2023 | 5 | 5 |
| 2024 | 6 | 5 |
| 2025 | 5 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for freeing differentially stuck pipes12 May 2026US 12,624,271 B2Saudi Arabian Oil Company
- Autonomous chemical treatment system and method for drilling and completion rigs30 Dec 2025US 12,509,966 B2Petroleo Brasileiro S.A. - Petrobras
- Eutectic metal alloy in drilling fluids and methods of use thereof7 Oct 2025US 12,435,255 B2Newpark Drilling Fluids LLC
- Drilling fluid additives for high-density reservoir drilling fluids29 Jul 2025US 12,371,604 B1Halliburton Energy Services.Inc.
- Exothermic drilling fluid composition and method of use25 Feb 2025US 12,234,704 B2Saudi Arabian Oil Company
- Method and system for enhancing subsurface permeability via electromagnetic fields and electromagnetically responsive particles27 Aug 2026US 2026/0251044 A1
- Composite emulsifier and oil-based drilling fluid13 Aug 2026US 2026/0234461 A1China Petroleum & Chemical Corporation
- Ultra-high density wellbore fluids produced through alkalization of aqueous isopolymetalate solutions1 Jan 2026US 2026/0002068 A1Saudi Arabian Oil Company
- Methods for freeing differentially stuck pipes25 Dec 2025US 2025/0388800 A1Saudi Arabian Oil Company
- Method and system for in-situ sequestration and mineralization of carbon dioxide27 Nov 2025US 2025/0361434 A1Aramco Services Company
Most cited
By later US patents
- Nanofluids and methods of use for drilling and completion fluids104US 8,822,386 B2Baker Hughes Incorporated · 2014
- Drilling and cementing with fluids containing zeolite56US 7,448,450 B2Halliburton Energy Services.Inc. · 2008
- Method for liquifying chloride-based heavy brine well completion fluids53US 4,594,170 AFMC Corporation · 1986
- Suspensions with high storage stability, comprising an aqueous silicate solution and a filler material51US 6,372,694 B1Crosfield Limited · 2002
- Mineral additives for setting and/or controlling the rheological properties and gel structure of aqueous liquid phases and the use of such additives32US 5,663,122 AHenkel Kommanditgesellschaft auf Aktien · 1997