C10G 7/08
Azeotropic or extractive distillation
Official title: Azeotropic or extractive distillation (refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents C10G21/00)
C10G7/08 (Azeotropic or extractive distillation) appears on 95 US grants and 72 published applications in this corpus.
Search patents in C10G- Granted patents
- 95
- Published applications
- 72
- Assignees
- 58
- Inventors
- 235
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 4 |
| 2003 | 3 | 5 |
| 2004 | 2 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 3 |
| 2010 | 2 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 4 |
| 2013 | 5 | 4 |
| 2014 | 4 | 5 |
| 2015 | 1 | 4 |
| 2016 | 2 | 1 |
| 2017 | 3 | 4 |
| 2018 | 2 | 4 |
| 2019 | 3 | 5 |
| 2020 | 4 | 3 |
| 2021 | 7 | 3 |
| 2022 | 2 | 4 |
| 2023 | 2 | 2 |
| 2024 | 3 | 5 |
| 2025 | 5 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing synthesis gas and aromatic hydrocarbon24 Feb 2026US 12,559,367 B2LG Chem.Ltd.
- Processes and systems for producing desulfurized alpha olefins5 Aug 2025US 12,378,483 B2Saudi Arabian Oil Company
- Methods for processing a hydrocarbon oil feed stream utilizing a delayed coker, steam enhanced catalytic cracker, and an aromatics complex5 Aug 2025US 12,378,485 B2Saudi Arabian Oil Company
- Methods for processing a hydrocarbon oil feed stream utilizing a delayed coker, steam enhanced catalytic cracker, and an aromatics complex18 Feb 2025US 12,227,708 B2Saudi Arabian Oil Company
- Methods for processing a hydrocarbon oil feed stream utilizing a gasification unit, dehydrogenation unit, steam enhanced catalytic cracker, and an aromatics complex18 Feb 2025US 12,227,709 B2Saudi Arabian Oil Company
- System and method for separation of non-ideal streams30 Jul 2026US 2026/0217635 A1Saudi Arabian Oil Company
- Energy-efficient process for separating butenes from c4-hyrocarbons streams9 Jul 2026US 2026/0193156 A1Evonik Oxeno GmbH
- Integrated configuration utilizing an alternate stripping medium for hydrocarbon separation8 Jan 2026US 2026/0008966 A1Lummus Technology Inc.
- Recycle of c4- or c6- light hydrocarbon liquids to acid condensation feed25 Dec 2025US 2025/0388820 A1
- Processes and systems for producing desulfurized alpha olefins4 Jul 2024US 2024/0218269 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Process for generating pure benzene from reformed gasoline69US 6,124,514 AKrupp Uhde GmbH · 2000
- Processes for the separation of aromatic hydrocarbons from a hydrocarbon mixture58US 5,310,480 AUop LLC · 1994
- Extractive distillation45US 4,053,369 APhillips Petroleum Company · 1977
- Extractive distillation43US 4,371,427 APhillips Petroleum Company · 1983
- Recovery of styrene from pyrolysis gasoline by extractive distillation24US 5,849,982 AHFM International, Inc. · 1998