C10C 3/08
Working-up pitch, asphalt, bitumen: by selective extraction
Official title: by selective extraction
C10C3/08 (Working-up pitch, asphalt, bitumen: by selective extraction) appears on 78 US grants and 74 published applications in this corpus.
Search patents in C10C- Granted patents
- 78
- Published applications
- 74
- Assignees
- 54
- Inventors
- 244
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 2 |
| 2017 | 1 | 2 |
| 2018 | 1 | 7 |
| 2019 | 4 | 11 |
| 2020 | 5 | 4 |
| 2021 | 4 | 2 |
| 2022 | 2 | 7 |
| 2023 | 4 | 5 |
| 2024 | 4 | 9 |
| 2025 | 6 | 4 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Asphalt materials from wind turbine blades and other composite materials2 Jun 2026US 12,644,053 B2Western Research Institute
- System and method for separating bitumen from shingle powder31 Mar 2026US 12,590,250 B2Redivius, Inc.
- Controlling mesophase softening point and production yield by varying solvent SBN via solvent deasphalting31 Mar 2026US 12,590,251 B2ExxonMobil Chemical Patents Inc.
- Steam cracking process for converting crude oils to pitch compositions spinnable into carbon articles10 Mar 2026US 12,570,905 B2ExxonMobil Technology and Engineering Company
- High value products derived from coal-based feedstocks20 Jan 2026US 12,528,993 B2University of Wyoming
- Hydrogen sulfide scavengers17 Sep 2026US 2026/0275199 A1Ecolab USA Inc.
- Mesophase pitch for carbon fiber and method for producing mesophase pitch-based carbon fiber16 Jul 2026US 2026/0201611 A1Kyushu University, National University Corporation
- Methods and apparatus for treating bitumen mixtures5 Feb 2026US 2026/0035618 A1USD Group LLC
- Extracts of coal and uses thereof15 Jan 2026US 2026/0015504 A1
- Method of Manufacturing Recycled Asphaltic and Asphaltic Limestone Powder Pellets and Shapes through Densification26 Jun 2025US 2025/0207033 A1
Most cited
By later US patents
- Supercritical selective extraction of hydrocarbons from asphaltic petroleum oils44US 4,354,928 AMobil Oil Corporation · 1982
- Treatment of pitches in carbon artifact manufacture42US 4,277,324 AExxon Research & Engineering Co. · 1981
- Upgrading of bitumen asphaltenes by hot water treatment42US 5,316,659 AExxon Research & Engineering Co. · 1994
- Production of pitch and coke from raw petroleum coke38US 4,369,171 AGreat Lakes Carbon Corporation · 1983
- Solvent deasphalting36US 4,101,415 APhillips Petroleum Company · 1978