C09K 8/265
Containing inorganic additives
Official title: {containing inorganic additives}
C09K8/265 (Containing inorganic additives) appears on 23 US grants and 28 published applications in this corpus.
Search patents in C09K- Granted patents
- 23
- Published applications
- 28
- Assignees
- 22
- Inventors
- 79
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 5 | 1 |
| 2015 | 0 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 0 | 1 |
| 2022 | 3 | 0 |
| 2023 | 2 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetic nanoemulsions for fluid conductivity analysis in subsurface reservoirs2 Dec 2025US 12,486,763 B2PERM Inc.
- Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition29 Oct 2024US 12,129,423 B2Petroleo Brasileiro S.A. - Petrobras
- Perlite containing drilling fluids and uses thereof19 Sep 2023US 11,760,913 B2King Fahd University of Petroleum and Minerals
- Emulsifiers for direct emulsion drilling fluids14 Feb 2023US 11,578,248 B2Halliburton Energy Services.Inc.
- Composition and method for controlling lost circulation15 Nov 2022US 11,499,085 B1Baker Hughes Oilfield Operations LLC
- Biodegradable surfactant fluid loss control additive5 Jun 2025US 2025/0179343 A1Halliburton Energy Services.Inc.
- Magnetic nanoemulsions for fluid conductivity analysis in subsurface reservoirs21 Dec 2023US 2023/0407744 A1PERM Inc.
- Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition6 Apr 2023US 2023/0104709 A1Petroleo Brasileiro S.A. - Petrobras
- Wellbore drilling compositions12 Aug 2021US 2021/0246352 A1Chevron Phillips Chemical Company LP
- Perlite containing drilling fluids and uses thereof17 Dec 2020US 2020/0392392 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Conversion of emulsion mud to cement91US 5,358,049 AShell Oil Company · 1994
- Nanoemulsions50US 8,357,639 B2Baker Hughes Incorporated · 2013
- Use of selected fatty alcohols and their mixtures with carboxylic acid esters as lubricant components in water-based drilling fluid systems for soil exploration41US 6,716,799 B1Cognis Deutschland GmbH & Co. KG · 2004
- Nanohybrid phase interfaces for altering wettability in oil field applications29US 8,763,703 B2Halliburton Energy Services.Inc. · 2014
- Wellbore fluid comprising a base fluid and a particulate bridging agent18US 7,854,277 B2BP Exploration Operating Company Limited · 2010