C10C
Working-up pitch, asphalt, bitumen, tar
Official title: WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
C10C (Working-up pitch, asphalt, bitumen, tar) appears on 1,015 US grants and 585 published applications in this corpus.
Search patents in C10C- Granted patents
- 1,015
- Published applications
- 585
- Assignees
- 473
- Inventors
- 1,926
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 24 | 0 |
| 1978 | 19 | 0 |
| 1979 | 14 | 0 |
| 1980 | 31 | 0 |
| 1981 | 33 | 0 |
| 1982 | 38 | 0 |
| 1983 | 31 | 0 |
| 1984 | 44 | 0 |
| 1985 | 36 | 0 |
| 1986 | 29 | 0 |
| 1987 | 20 | 0 |
| 1988 | 16 | 0 |
| 1989 | 23 | 0 |
| 1990 | 23 | 0 |
| 1991 | 18 | 0 |
| 1992 | 16 | 0 |
| 1993 | 13 | 0 |
| 1994 | 17 | 0 |
| 1995 | 14 | 0 |
| 1996 | 21 | 0 |
| 1997 | 14 | 0 |
| 1998 | 17 | 0 |
| 1999 | 10 | 0 |
| 2000 | 19 | 0 |
| 2001 | 15 | 2 |
| 2002 | 10 | 6 |
| 2003 | 4 | 9 |
| 2004 | 3 | 8 |
| 2005 | 2 | 7 |
| 2006 | 6 | 2 |
| 2007 | 4 | 6 |
| 2008 | 7 | 9 |
| 2009 | 5 | 23 |
| 2010 | 6 | 15 |
| 2011 | 18 | 28 |
| 2012 | 19 | 42 |
| 2013 | 24 | 30 |
| 2014 | 17 | 28 |
| 2015 | 43 | 42 |
| 2016 | 23 | 13 |
| 2017 | 20 | 21 |
| 2018 | 18 | 37 |
| 2019 | 24 | 46 |
| 2020 | 27 | 25 |
| 2021 | 35 | 35 |
| 2022 | 31 | 34 |
| 2023 | 23 | 37 |
| 2024 | 24 | 34 |
| 2025 | 33 | 24 |
| 2026 | 14 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- System and process for increasing a softening point of isotropic pitch6 Oct 2026US 12,753,347 B2Acp Technologies, LLC
- Laser-assisted synthesis of graphene from pitch11 Aug 2026US 12,703,634 B2Saudi Arabian Oil Company
- Processes for making mesophase pitch14 Jul 2026US 12,680,027 B2Saudi Arabian Oil Company
- Asphalt materials from wind turbine blades and other composite materials2 Jun 2026US 12,644,053 B2Western Research Institute
- Thermal conversion of heavy hydrocarbons to mesophase pitch28 Apr 2026US 12,612,562 B2ExxonMobil Chemical Patents Inc.
- Pitches from aromatic feedstocks1 Oct 2026US 2026/0297431 A1ExxonMobil Technology and Engineering Company
- Hydrogen sulfide scavengers17 Sep 2026US 2026/0275199 A1Ecolab USA Inc.
- Process for valorization of pitch from residue upgradation unit along with production of high modulus bitumen27 Aug 2026US 2026/0250579 A1Hindustan Petroleum Corporation Limited
- Cracking resistant asphalt binders including high viscosity vacuum tower bottoms material and at least one of a heavy vacuum gas oil or a biomaterial, and related methods20 Aug 2026US 2026/0242285 A1Marathon Petroleum Company LP
- Cracking resistant asphalt binders including hard asphalt, and related methods20 Aug 2026US 2026/0242286 A1Marathon Petroleum Company LP
Most cited
By later US patents
- In situ shale-oil recovery process288US 4,458,757 AExxon Research & Engineering Co. · 1984
- Apparatus for a circulating bed transport fast pyrolysis reactor system151US 5,961,786 AEnsyn Technologies, Inc. · 1999
- Method and apparatus for a circulating bed transport fast pyrolysis reactor system125US 5,792,340 AEnsyn Technologies, Inc. · 1998
- Low water biomass-derived pyrolysis oils and processes for producing the same91US 8,519,205 B2Ensyn Renewables, Inc. · 2013
- Ambient froth flotation process for the recovery of bitumen from tar sand87US 4,425,227 AGNC Energy Corporation · 1984