G01N 2013/0275
Involving surface-active agents
Official title: {involving surface-active agents}
G01N2013/0275 (Involving surface-active agents) appears on 41 US grants and 33 published applications in this corpus.
Search patents in G01N- Granted patents
- 41
- Published applications
- 33
- Assignees
- 40
- Inventors
- 127
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 3 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 4 |
| 2019 | 4 | 0 |
| 2020 | 2 | 2 |
| 2021 | 0 | 3 |
| 2022 | 1 | 1 |
| 2023 | 4 | 3 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Surface energy measurement instrument for metal foil and measurement method using the same26 May 2026US 12,638,371 B2LG Energy Solution, Ltd.
- Method of measurement of interfacial tension (IFT) of two immiscible fluids at reservoir conditions: an in situ gas buffered injection2 Sep 2025US 12,404,754 B2Saudi Arabian Oil Company
- Instrument and method for accurate measurement of surface viscosity of viscous liquid13 Aug 2024US 12,061,141 B2Purdue Research Foundation
- Method of evaluating foaming agents and surfactants21 Nov 2023US 11,821,827 B2Saudi Arabian Oil Company
- CMC-based method for surfactant concentration determination19 Sep 2023US 11,761,874 B2Saudi Arabian Oil Company
- Antifogging agent1 Oct 2026US 2026/0298803 A1Resonac Corporation
- Method and apparatus22 Jan 2026US 2026/0024622 A1Aphoa Limited
- Method of measurement of interfacial tension (ift) of two immiscible fluids at reservoir conditions: an in situ gas buffered injection27 Nov 2025US 2025/0361801 A1Saudi Arabian Oil Company
- Surface Energy Measurement Instrument For Metal Foil And Measurement Method Using The Same2 May 2024US 2024/0142358 A1LG Energy Solution, Ltd.
- Water film evaluation method, and antifogging agent evaluation method7 Dec 2023US 2023/0393055 A1Resonac Corporation
Most cited
By later US patents
- Method for selection of surfactants in well stimulation29US 9,422,470 B2Multi-Chem Group, LLC · 2016
- Surfactant monitoring by foam generation23US 5,597,950 AThe Regents of the University of California Office of Technology Transfer · 1997
- Method and apparatus for field measurement of interfacial tension between immiscible fluids22US 4,196,615 AChevron Research Company · 1980
- Captive bubble surface tensiometer12US 4,953,389 AUniversity of Calgary · 1990
- Method for detecting a coating material on a substrate10US 5,583,285 ALucent Technologies Inc. · 1996