G01N 33/2841
Gas in oils
Official title: {Gas in oils, e.g. hydrogen in insulating oils}
G01N33/2841 (Gas in oils) appears on 203 US grants and 213 published applications in this corpus.
Search patents in G01N- Granted patents
- 203
- Published applications
- 213
- Assignees
- 144
- Inventors
- 637
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 1 | 3 |
| 2005 | 2 | 3 |
| 2006 | 2 | 3 |
| 2007 | 2 | 5 |
| 2008 | 4 | 4 |
| 2009 | 3 | 2 |
| 2010 | 3 | 3 |
| 2011 | 3 | 2 |
| 2012 | 1 | 13 |
| 2013 | 7 | 4 |
| 2014 | 6 | 14 |
| 2015 | 5 | 13 |
| 2016 | 10 | 19 |
| 2017 | 5 | 14 |
| 2018 | 15 | 11 |
| 2019 | 15 | 9 |
| 2020 | 11 | 15 |
| 2021 | 11 | 12 |
| 2022 | 12 | 12 |
| 2023 | 9 | 13 |
| 2024 | 7 | 17 |
| 2025 | 15 | 12 |
| 2026 | 12 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Measurement and control of entrained air and foam in metalworking fluids8 Sep 2026US 12,730,100 B2Quaker Chemical Corporation
- Measurement and control of entrained air and foam in metalworking fluids1 Sep 2026US 12,724,021 B2Quaker Chemical Corporation
- Processes and systems for monitoring one or more gases dissolved in a liquid1 Sep 2026US 12,724,022 B2Schlumberger Technology Corporation
- Adaptive combined approach for intelligent transformer dissolved gas alarm detection11 Aug 2026US 12,704,491 B2GE Vernova Infrastructure Technology LLC
- Diagnostic system directly connected to a subterranean formation for carbon dioixde monitoring30 Jun 2026US 12,669,493 B2Patina IP LLC
- Real time downhole api determination24 Sep 2026US 2026/0286843 A1Schlumberger Technology Corporation
- Micro-electro-mechanical systems on fiber sensors for fluid characterization, flow, and density measurement10 Sep 2026US 2026/0266639 A1Saudi Arabian Oil Company
- Method for Determining Water Cut and Oil - Gas Ratio in a Three - Phase System23 Jul 2026US 2026/0210936 A1China University of Petroleum-Beijing
- Device, system, and method for oil-containing electrical power devices or transmission devices16 Jul 2026US 2026/0202352 A1EON Corporation
- Systems and Methods for Improving Transformer Health9 Jul 2026US 2026/0194567 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Apparatus and method for detecting the presence of gas in a borehole flow stream92US 5,167,149 ASchlumberger Technology Corporation · 1992
- System for measuring gases dissolved in a liquid51US 6,037,592 AUnderground Systems, Inc. · 2000
- Detection of fluids with metal-insulator-semiconductor sensors48US 5,417,821 AElectric Power Research Institute, Inc. · 1995
- Transformer fault detection47US 4,112,737 AMorgan Schaffer Ltd. · 1978
- Gas chromatograph techniques for on-line testing of transformer faults37US 5,659,126 A1997