D01F 9/155
From petroleum pitch
Official title: from petroleum pitch
D01F9/155 (From petroleum pitch) appears on 102 US grants and 39 published applications in this corpus.
Search patents in D01F- Granted patents
- 102
- Published applications
- 39
- Assignees
- 60
- Inventors
- 252
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 11 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 3 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 1 | 0 |
| 2021 | 2 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 6 |
| 2024 | 2 | 8 |
| 2025 | 4 | 2 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pitch compositions for spinning into carbon articles and methods relating thereto19 May 2026US 12,630,947 B2ExxonMobil Technology and Engineering Company
- 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
- Processes for producing mesophase pitch28 Oct 2025US 12,454,648 B2ExxonMobil Chemical Patents Inc.
- Pitch compositions for spinning into carbon articles and methods relating thereto7 Oct 2025US 12,435,450 B2Exxon Mobil Technology and Engineering Company
- Asphaltene-based melt-blown nanofiber mats6 Aug 2026US 2026/0226664 A1The University of British Columbia
- Mesophase pitch for carbon fiber and method for producing mesophase pitch-based carbon fiber16 Jul 2026US 2026/0201611 A1Kyushu University, National University Corporation
- Systems and processes for producing low cost bulk random carbon fibers using asphaltene as a feedstock25 Jun 2026US 2026/0176798 A1B.C. Research Inc.
- Processes for making mesophase pitch13 Nov 2025US 2025/0346815 A1Saudi Arabian Oil Company
- Processes for converting hydrocarbon feedstock to pitch compositions suitable for the manufacture of carbon articles16 Jan 2025US 2025/0019591 A1ExxonMobil Technology and Engineering Company
Most cited
By later US patents
- High modulus, high strength carbon fibers produced from mesophase pitch102US 4,005,183 AUnion Carbide Corporation · 1977
- Low molecular weight mesophase pitch59US 4,209,500 AUnion Carbide Corporation · 1980
- Thermally conductive polymer sheet53US 6,652,958 B2Polymatech Co., Ltd. · 2003
- Thermally conductive polymer composition and thermally conductive molded article46US 6,730,731 B2Polymatech Co., Ltd. · 2004
- Pitch-based activated carbon fiber43US 5,446,005 A1995