C10G 73/02
Recovery of petroleum waxes from hydrocarbon oils
Official title: Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils
C10G73/02 (Recovery of petroleum waxes from hydrocarbon oils) appears on 164 US grants and 60 published applications in this corpus.
Search patents in C10G- Granted patents
- 164
- Published applications
- 60
- Assignees
- 62
- Inventors
- 296
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 15 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 2 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 9 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 4 |
| 2014 | 2 | 1 |
| 2015 | 1 | 4 |
| 2016 | 2 | 4 |
| 2017 | 4 | 3 |
| 2018 | 5 | 3 |
| 2019 | 1 | 4 |
| 2020 | 4 | 7 |
| 2021 | 7 | 2 |
| 2022 | 2 | 1 |
| 2023 | 2 | 4 |
| 2024 | 2 | 2 |
| 2025 | 2 | 3 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C10G 73/06With the use of solvents71
- C10G 73/04With the use of filter aids35
- C10G 73/32Methods of cooling during dewaxing31
- C10G 73/025By filtration14
- C10G 73/34Controlling or regulating9
- C10G 73/24By formation of adducts7
- C10G 73/30With electric means7
- C10G 73/28By centrifugal force6
All 9 subgroupsShow fewer
Recent patents
- Hydro-dealkylation process to generate high quality fuels, base stocks and waxes7 Jul 2026US 12,674,104 B2ExxonMobil Technology and Engineering Company
- Recovery of aliphatic hydrocarbons24 Feb 2026US 12,559,686 B2Shell USA, Inc.
- Dewaxing aid5 Aug 2025US 12,378,336 B2Nof Corporation
- Wax and lube base stock products using shape selective membrane separation11 Mar 2025US 12,247,174 B2Exxon Mobil Technology and Engineering Company
- Crosslinked polymer for dewaxing—preparation and implementations thereof19 Nov 2024US 12,146,015 B2Hindustan Petroleum Corporation Limited
- Process and plant for producing synthetic paraffinic kerosene as jet fuel1 Oct 2026US 2026/0297443 A1Topsoe A/S
- Method for obtaining a wax from a pyrolysis residue13 Aug 2026US 2026/0234480 A1Omv Downstream GmbH
- Process for producing a single phase immersion cooling fluid from fischer-tropsch oil18 Jun 2026US 2026/0167876 A1Uop LLC
- Method for preparing low-pour point, high-aromatic, and environmental-friendly rubber oil by combining extraction and dewaxing29 Jan 2026US 2026/0028541 A1China University of Petroleum (East China)
- Method for dewaxing extract oil and rubber oil29 Jan 2026US 2026/0028542 A1China University of Petroleum (East China)
Most cited
By later US patents
- Process for preparing copolymers of ethylene and vinyl esters or mixtures with other ethylenically unsaturated monomers39US 3,981,850 AExxon Research & Engineering Co. · 1976
- Process for preparing lubes with high viscosity index values30US 6,773,578 B1Chevron U.S.A.Inc. · 2004
- Copolymers of ethylene and ethylenically unsaturated monomers, process for their preparation and distillate oil containing said copolymers28US 4,087,255 AExxon Research & Engineering Co. · 1978
- Olefin-dicarboxylic anhydride copolymers and esters thereof are dewaxing aids23US 4,151,069 AExxon Research & Engineering Co. · 1979
- Solvent extraction refining of petroleum products23US 6,497,813 B2Process Dynamics, Inc. · 2002