C01B 32/33
From distillation residues of coal or petroleum
Official title: from distillation residues of coal or petroleum; from petroleum acid sludge
C01B32/33 (From distillation residues of coal or petroleum) appears on 31 US grants and 36 published applications in this corpus.
Search patents in C01B- Granted patents
- 31
- Published applications
- 36
- Assignees
- 41
- Inventors
- 129
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 2 |
| 2019 | 1 | 4 |
| 2020 | 3 | 3 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 6 |
| 2024 | 3 | 2 |
| 2025 | 0 | 2 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bio-oil light fraction-based bread-shaped porous activated carbon, method for preparing the same and use thereof14 Jul 2026US 12,679,735 B2Zhejiang University
- Activated carbon and method of fabrication thereof26 May 2026US 12,636,631 B2National University of Singapore
- Electrode for electrochemical devices, and electrochemical device30 Jul 2024US 12,051,542 B2Panasonic Intellectual Property Management Co., Ltd.
- Processes and compositions for carbon foam materials2 Jan 2024US 11,858,818 B2West Virginia University
- Method of preparing potable water2 Jan 2024US 11,858,841 B1Kinetix Performance Solutions, LLC
- Method for making activated carbon material for supercapacitor11 Jun 2026US 2026/0159399 A1CPC Corporation, Taiwan
- Activated carbon production and methods therefor23 Apr 2026US 2026/0109610 A1Atlas Power Technologies Inc.
- Method for making activated carbon material for supercapacitor12 Feb 2026US 2026/0042674 A1CPC Corporation, Taiwan
- Catalytic cracking method of pvc waste5 Feb 2026US 2026/0035617 A1LG Chem.Ltd.
- Recarburizer and method of producing same9 Oct 2025US 2025/0313909 A1SK Innovation Co., Ltd.
Most cited
By later US patents
- Filter sheet material109US 4,510,193 A1985
- Manufacture of porous carbon41US 4,318,824 ALancashire Tar Distillers Limited · 1982
- Cracking of a process gas40US 9,862,602 B1Lyten, Inc. · 2018
- Antidote including activated carbon particles26US 4,761,284 AKureha Kagaku Kogy Kabushiki Kaisha · 1988
- Process for treating activated carbon with aqueous ammonia25US 4,822,765 AKureha Kagaku Kogyo Kabushiki Kaisha · 1989