C10C 1/00
Working-up tar
Official title: Working-up tar {(petroleum (oil) tar C10C3/00)}
C10C1/00 (Working-up tar) appears on 149 US grants and 74 published applications in this corpus.
Search patents in C10C- Granted patents
- 149
- Published applications
- 74
- Assignees
- 100
- Inventors
- 375
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 1 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 3 |
| 2004 | 0 | 3 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 3 | 2 |
| 2009 | 2 | 3 |
| 2010 | 0 | 2 |
| 2011 | 2 | 3 |
| 2012 | 1 | 0 |
| 2013 | 3 | 4 |
| 2014 | 2 | 2 |
| 2015 | 7 | 12 |
| 2016 | 1 | 1 |
| 2017 | 3 | 0 |
| 2018 | 1 | 4 |
| 2019 | 1 | 7 |
| 2020 | 4 | 5 |
| 2021 | 5 | 1 |
| 2022 | 5 | 5 |
| 2023 | 3 | 6 |
| 2024 | 2 | 3 |
| 2025 | 4 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C10C 1/04Working-up tar: by distillation37
- C10C 1/19Working-up tar: by thermal treatment not involving distillation36
- C10C 1/18Working-up tar: by extraction with selective solvents33
- C10C 1/20Refining by chemical means inorganic or organic compounds27
- C10C 1/02Removal of water8
- C10C 1/005Working-up tar: by mixing two or more coaltar fractions2
Recent patents
- Purification of tar containing gas streams17 Feb 2026US 12,552,993 B2Meva Energy AB
- Processes for functionalization and polymerization of polyaromatic feedstock2 Sep 2025US 12,404,408 B2Exxon Mobil Technology and Engineering Company
- Low-CTE, low-puffing needle coke20 May 2025US 12,304,819 B2Nippon Steel Chemical & Material Co., Ltd.
- Using stimulus to convert coal to mesophase pitch and carbon fibers28 Jan 2025US 12,209,220 B2Carbon Holdings Intellectual Properties, LLC
- Method for producing biofuels involving the pyrolysis of macrophyte biomass14 Jan 2025US 12,195,673 B2Rio Parana Energia S.A.
- Extracts of coal and uses thereof15 Jan 2026US 2026/0015504 A1
- Using stimulus to convert coal to mesophase pitch and carbon fibers24 Apr 2025US 2025/0129293 A1Carbon Holdings Intellectual Properties, LLC
- Heat treatment product by process for increased pitch yields20 Mar 2025US 2025/0092315 A1Koppers Delaware, Inc.
- Purification Of Tar Containing Gas Streams1 Aug 2024US 2024/0254396 A1Meva Energy AB
- Continuous solid orgainic matter pyrolysis polygeneration system and method for using same23 May 2024US 2024/0166951 A1Engergy Research Institute of Shandong Academy of Sciences
Most cited
By later US patents
- Catalyst for the hydrogenation of hydrocarbon material85US 5,166,118 AVeba Oel Technologie GmbH · 1992
- Process for the hydrogenation of heavy and residual oils60US 4,851,107 AIntevep, S. A. · 1989
- Neomesophase formation49US 4,184,942 AExxon Research & Engineering Co. · 1980
- Supercritical extraction process43US 4,482,453 APhillips Petroleum Company · 1984
- Solvent deasphalting36US 4,101,415 APhillips Petroleum Company · 1978