G01N 33/28
Oils , i.e. hydrocarbon liquids
Official title: Oils {, i.e. hydrocarbon liquids} (edible oils or edible fats G01N33/03)
G01N33/28 (Oils , i.e. hydrocarbon liquids) appears on 3,930 US grants and 3,704 published applications in this corpus.
Search patents in G01N- Granted patents
- 3,930
- Published applications
- 3,704
- Assignees
- 1,513
- Inventors
- 8,355
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 23 | 0 |
| 1978 | 21 | 0 |
| 1979 | 17 | 0 |
| 1980 | 15 | 0 |
| 1981 | 23 | 0 |
| 1982 | 24 | 0 |
| 1983 | 20 | 0 |
| 1984 | 32 | 0 |
| 1985 | 28 | 0 |
| 1986 | 24 | 0 |
| 1987 | 32 | 0 |
| 1988 | 40 | 0 |
| 1989 | 36 | 0 |
| 1990 | 39 | 0 |
| 1991 | 31 | 0 |
| 1992 | 48 | 0 |
| 1993 | 61 | 0 |
| 1994 | 57 | 0 |
| 1995 | 50 | 0 |
| 1996 | 54 | 0 |
| 1997 | 67 | 0 |
| 1998 | 74 | 0 |
| 1999 | 47 | 0 |
| 2000 | 41 | 0 |
| 2001 | 59 | 7 |
| 2002 | 43 | 48 |
| 2003 | 53 | 68 |
| 2004 | 65 | 89 |
| 2005 | 55 | 83 |
| 2006 | 62 | 78 |
| 2007 | 61 | 88 |
| 2008 | 70 | 108 |
| 2009 | 57 | 112 |
| 2010 | 70 | 119 |
| 2011 | 72 | 107 |
| 2012 | 96 | 125 |
| 2013 | 113 | 157 |
| 2014 | 98 | 156 |
| 2015 | 115 | 192 |
| 2016 | 142 | 245 |
| 2017 | 166 | 224 |
| 2018 | 174 | 221 |
| 2019 | 213 | 207 |
| 2020 | 218 | 209 |
| 2021 | 184 | 226 |
| 2022 | 188 | 200 |
| 2023 | 215 | 231 |
| 2024 | 163 | 153 |
| 2025 | 144 | 147 |
| 2026 | 112 | 104 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 33/2835Specific substances contained in the oils or fuels1,489
- G01N 33/2823Raw oil, drilling fluid or polyphasic mixtures1,339
- G01N 33/2888Lubricating oil characteristics645
- G01N 33/2829Mixtures of fuels252
- G01N 33/30For lubricating properties162
- G01N 33/2805Investigating the resistance to heat or oxidation84
- G01N 33/2811By measuring cloud point or pour point of oils54
- G01N 33/2817Using a test engine43
All 9 subgroupsShow fewer
Recent patents
- NMR characterization of modified drilling fluids6 Oct 2026US 12,754,154 B2Schlumberger Technology Corporation
- Printed coil sensors for monitoring fluid condition29 Sep 2026US 12,748,032 B2GasTOPS Ltd.
- Flow regime classification, water liquid ratio estimation, and salinity estimation systems and methods29 Sep 2026US 12,748,093 B2OneSubsea IP UK Limited
- Method of determining saturates, aromatics, resins, and asphaltene (SARA) fractions of reservoir fluid during downhole fluid analysis29 Sep 2026US 12,748,097 B2Schlumberger Technology Corporation
- Conductive grease formulations and grounding solutions for electric drive unit22 Sep 2026US 12,742,130 B2Tesla, Inc.
- Nozzle manifold assembly8 Oct 2026US 2026/0307085 A1The Aerospace Corporation
- 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)
- Fluid cell device and method for measuring drilling mud properties8 Oct 2026US 2026/0309674 A1
- Apparatuses, processes, and systems including fuel composition determination1 Oct 2026US 2026/0298170 A1Clummins Inc.
- Ultrasonic electromagnetic sensor for multiphase cut measurements and associated methods1 Oct 2026US 2026/0298858 A1PERM Inc.
Most cited
By later US patents
- Modular data collection and analysis system379US 6,434,512 B1Reliance Electric Technologies, LLC · 2002
- Intelligent fluid sensor for machinery diagnostics, prognostics, and control294US 7,581,434 B1Rockwell Automation Technologies, Inc. · 2009
- High temperature fluid sample aging cell162US 9,784,667 B2OFI Testing Equipment, Inc. · 2017
- Sonic measurement of flow rate and water content of oil-water streams140US 4,080,837 AContinental Oil Company · 1978
- Methods and apparatus for determining gas-oil ratio in a geological formation through the use of spectroscopy131US 5,939,717 ASchlumberger Technology Corporation · 1999