G01N 33/2847
Water in oils
Official title: {Water in oils}
G01N33/2847 (Water in oils) appears on 331 US grants and 369 published applications in this corpus.
Search patents in G01N- Granted patents
- 331
- Published applications
- 369
- Assignees
- 224
- Inventors
- 914
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 4 |
| 2003 | 2 | 2 |
| 2004 | 5 | 7 |
| 2005 | 1 | 3 |
| 2006 | 4 | 3 |
| 2007 | 1 | 7 |
| 2008 | 6 | 7 |
| 2009 | 3 | 9 |
| 2010 | 7 | 6 |
| 2011 | 6 | 12 |
| 2012 | 7 | 8 |
| 2013 | 6 | 11 |
| 2014 | 7 | 17 |
| 2015 | 7 | 18 |
| 2016 | 17 | 24 |
| 2017 | 12 | 19 |
| 2018 | 21 | 27 |
| 2019 | 17 | 21 |
| 2020 | 22 | 24 |
| 2021 | 23 | 29 |
| 2022 | 22 | 28 |
| 2023 | 32 | 26 |
| 2024 | 18 | 14 |
| 2025 | 20 | 22 |
| 2026 | 8 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- NMR characterization of modified drilling fluids6 Oct 2026US 12,754,154 B2Schlumberger Technology Corporation
- Flow regime classification, water liquid ratio estimation, and salinity estimation systems and methods29 Sep 2026US 12,748,093 B2OneSubsea IP UK Limited
- Methods and devices for monitoring machine fluids14 Jul 2026US 12,681,003 B2LogiLube, LLC
- Sensor for quantifying production fluid percentage content23 Jun 2026US 12,662,937 B2Halliburton Energy Services.Inc.
- Method and system for water cut sensing in an oil-water flow16 Jun 2026US 12,655,759 B2King Abdullah University of Science and Technology
- Method for measuring downhole holdup, and method for determining downhole fluid interface and geometric distribution8 Oct 2026US 2026/0309606 A1China University of Petroleum (East China)
- Demulsifier screening and characterization using modified karl fischer reagent1 Oct 2026US 2026/0298897 A1Saudi Arabian Oil Company
- Realtime water sample and salinity measurement in multiphase flow17 Sep 2026US 2026/0276430 A1Saudi Arabian Oil Company
- Micro-electro-mechanical systems on fiber sensors for fluid characterization, flow, and density measurement10 Sep 2026US 2026/0266639 A1Saudi Arabian Oil Company
- Water intrusion detection method, water intrusion detection device, and program for device using lubricant3 Sep 2026US 2026/0259188 A1Nsk Ltd.
Most cited
By later US patents
- Sonic measurement of flow rate and water content of oil-water streams140US 4,080,837 AContinental Oil Company · 1978
- Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream use84US 6,292,756 B1Premier Instruments, Inc. · 2001
- On-site analyzer71US 6,452,179 B1Global Technovations, Inc. · 2002
- Automatic determination of moisture content and lubricant type70US 5,656,767 AComputational Systems, Inc. · 1997
- Optical fuel/air/water sensor and detector circuit59US 5,534,708 ASimmonds Precision Products, Inc. · 1996