C01B 32/39
Apparatus for the preparation thereof
C01B32/39 (Apparatus for the preparation thereof) appears on 98 US grants and 54 published applications in this corpus.
Search patents in C01B- Granted patents
- 98
- Published applications
- 54
- Assignees
- 78
- Inventors
- 237
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 9 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 5 |
| 2010 | 3 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 0 |
| 2014 | 2 | 2 |
| 2015 | 2 | 6 |
| 2016 | 2 | 3 |
| 2017 | 4 | 4 |
| 2018 | 0 | 1 |
| 2019 | 1 | 3 |
| 2020 | 3 | 3 |
| 2021 | 1 | 3 |
| 2022 | 2 | 2 |
| 2023 | 5 | 3 |
| 2024 | 1 | 4 |
| 2025 | 2 | 2 |
| 2026 | 3 | 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
- Biogenic activated carbon and methods of making and using same28 Apr 2026US 12,611,649 B2Carbon Technology Holdings, LLC
- Carbon micro-plant21 Apr 2026US 12,605,691 B2Carbon Technology Holdings, LLC
- Process for producing activated carbon and hydrogen19 Aug 2025US 12,391,555 B2
- Continuous carbonaceous matter thermolysis and pressurized char activation with hydrogen production11 Feb 2025US 12,221,350 B2
- Method and system for producing activated carbon24 Sep 2026US 2026/0285688 A1Valmet Corporation
- Carbon micro-plant20 Aug 2026US 2026/0241367 A1Carbon Technology Holdings, LLC
- Method of producing activated carbon and silica and recycling resources23 Apr 2026US 2026/0109609 A1Hyundai Motor Company
- System for forming activated or devolatilized carbon from coal or biomass by pressurized pyrolysis and methods of use2 Apr 2026US 2026/0091980 A1
- Methods and devices for controlling steam introduction in a kiln16 Oct 2025US 2025/0320996 A1Group14 Technologies, Inc.
Most cited
By later US patents
- Carbon micro-plant58US 9,724,667 B2Carbon Technology Holdings, LLC · 2017
- Carbon micro-plant55US 9,475,031 B2Biogenic Reagents Ventures, LLC · 2016
- Spent activated carbon regenerator51US 4,039,290 AKureha Kagaku Kogyo Kabushiki Kaisha · 1977
- Thermal decomposition apparatus45US 4,439,209 A1984
- Biogenic activated carbon and methods of making and using same39US 11,285,454 B2Carbon Technology Holdings, LLC · 2022