C10C 1/18
Working-up tar: by extraction with selective solvents
Official title: by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G21/00)
C10C1/18 (Working-up tar: by extraction with selective solvents) appears on 33 US grants and 16 published applications in this corpus.
Search patents in C10C- Granted patents
- 33
- Published applications
- 16
- Assignees
- 24
- Inventors
- 83
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 5 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 2 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Purification of tar containing gas streams17 Feb 2026US 12,552,993 B2Meva Energy AB
- Low-CTE, low-puffing needle coke20 May 2025US 12,304,819 B2Nippon Steel Chemical & Material Co., Ltd.
- Mesophase pitch for carbon fiber production using supercritical carbon dioxide26 Nov 2024US 12,152,198 B2TerraPower, LLC
- Mesophase pitch for carbon fiber production using supercritical carbon dioxide15 Aug 2023US 11,725,146 B2TerraPower, LLC
- Supercritical CO2 solvated process to convert coal to carbon fibers13 Dec 2022US 11,525,091 B2Carbon Holdings Intellectual Properties, LLC
- Purification Of Tar Containing Gas Streams1 Aug 2024US 2024/0254396 A1Meva Energy AB
- Mesophase pitch for carbon fiber production using supercritical carbon dioxide30 Nov 2023US 2023/0383189 A1TerraPower, LLC
- Supercritical CO2 Solvated Process to Convert Coal to Carbon Fibers23 Mar 2023US 2023/0091961 A1Carbon Holdings Intellectual Properties, LLC
- Mesophase pitch for carbon fiber production using supercritical carbon dioxide17 Nov 2022US 2022/0363995 A1TerraPower, LLC
- Low-cte, low-puffing needle coke25 Aug 2022US 2022/0267151 A1Nippon Steel Chemical & Material Co., Ltd.
Most cited
By later US patents
- Supercritical extraction process43US 4,482,453 APhillips Petroleum Company · 1984
- Solvent deasphalting36US 4,101,415 APhillips Petroleum Company · 1978
- Energy efficient process for separating hydrocarbonaceous materials into various fractions26US 4,305,814 AKerr-McGee Refining Corporation · 1981
- Process for the separation of quinoline-insoluble components from coal tar pitch23US 4,259,171 ARutgerswerke Aktiengesellschaft · 1981
- Method for producing a precursor pitch for carbon fiber15US 4,575,412 AKawasaki Steel Corporation · 1986