G01N 2013/025
Measuring foam stability
Official title: {Measuring foam stability}
G01N2013/025 (Measuring foam stability) appears on 39 US grants and 20 published applications in this corpus.
Search patents in G01N- Granted patents
- 39
- Published applications
- 20
- Assignees
- 30
- Inventors
- 90
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 3 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 2 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of robust surfactant screening for foam applications21 Jul 2026US 12,687,477 B2Saudi Arabian Oil Company
- Apparatus and methods for foam generation and foam evaluation3 Mar 2026US 12,566,118 B2University of Wyoming
- Method for evaluating foamability with a fritted test apparatus5 Aug 2025US 12,379,295 B1King Fahd University of Petroleum and Minerals
- Evaluating the foamability of a solution using a vibrational viscometer27 May 2025US 12,313,511 B2King Fahd University of Petroleum and Minerals
- Method of evaluating foaming agents and surfactants21 Nov 2023US 11,821,827 B2Saudi Arabian Oil Company
- Apparatus and methods for foam generation and foam evaluation4 Jun 2026US 2026/0153421 A1University of Wyoming
- Method of robust surfactant screening for foam applications26 Mar 2026US 2026/0086011 A1Saudi Arabian Oil Company
- Method for evaluating foamability with a fritted test apparatus7 Aug 2025US 2025/0251329 A1King Fahd University of Petroleum and Minerals
- Systems and methods to evaluate a foamer for unloading liquid in oil and gas wells of mature fields3 Apr 2025US 2025/0110033 A1Weatherford Technology Holdings, LLC
- Method of robust surfactant screening for foam applications6 Feb 2025US 2025/0044207 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Sample changing chemical analysis method and apparatus49US 4,108,602 AHanson Research Corporation · 1978
- Flow through device for determination of the penetration rate of chemicals across biological membranes in vitro24US 4,667,504 AThe United States of America as represented by the Secretary of the Air Force · 1987
- Low density porous crosslinked polymeric materials24US 5,306,733 AShell Oil Company · 1994
- Real time determination of gas solubility and related parameters in manufacturing processes24US 6,847,898 B1Appleton Papers Inc. · 2005
- Real time determination of gas solubility and related parameters in manufacturing processes24US 7,559,223 B2Appleton Papers Inc. · 2009