C09K 2208/14
Double emulsions, i.e. oil-in-water-in-oil emulsions or water-in-oil-in-water emulsions
C09K2208/14 (Double emulsions, i.e. oil-in-water-in-oil emulsions or water-in-oil-in-water emulsions) appears on 36 US grants and 39 published applications in this corpus.
Search patents in C09K- Granted patents
- 36
- Published applications
- 39
- Assignees
- 19
- Inventors
- 75
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 3 |
| 2013 | 2 | 2 |
| 2014 | 3 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 2 |
| 2017 | 1 | 4 |
| 2018 | 0 | 2 |
| 2019 | 5 | 8 |
| 2020 | 7 | 4 |
| 2021 | 5 | 0 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year.
Recent patents
- Viscosifying friction reducers14 Oct 2025US 12,441,934 B2Energy Solutions (US) LLC
- Viscosifying friction reducers24 Oct 2023US 11,795,376 B2Energy Solutions (US) LLC
- Magnetic emulsions as contrast agents for subsurface applications22 Nov 2022US 11,506,049 B2Saudi Arabian Oil Company
- Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof31 May 2022US 11,345,841 B1Southwest Petroleum University
- Multiphase polymer suspension and use thereof14 Sep 2021US 11,118,101 B2S.P.C.M. SA
- Viscosifying friction reducers18 Jan 2024US 2024/0018412 A1Energy Solutions (US) LLC
- Magnetic emulsions as contrast agents for subsurface applications17 Feb 2022US 2022/0049599 A1Saudi Arabian Oil Company
- Viscosifying friction reducers24 Dec 2020US 2020/0399529 A1Solvay USA Inc.
- Encapsulation and controlled delivery of strong mineral acids23 Jul 2020US 2020/0231868 A1Aramco Services Company
- Encapsulation and controlled delivery of strong mineral acids23 Jul 2020US 2020/0231869 A1Aramco Services Company
Most cited
By later US patents
- Double emulsion based drilling fluids71US 6,793,025 B2M - I L. L. C. · 2004
- Method for improving the clean-up of emulsified acid fluid systems51US 8,349,771 B2Baker Hughes Incorporated · 2013
- Wellbore fluid44US 8,242,059 B2BP Exploration Operating Company Limited · 2012
- Pumpable multiple phase compositions for controlled release applications downhole28US 6,464,009 B2Baker Hughes Incorporated · 2002
- Pumpable multiple phase compositions for controlled release applications downhole24US 6,284,714 B1Baker Hughes Incorporated · 2001