C01B 32/942
Calcium carbide
C01B32/942 (Calcium carbide) appears on 29 US grants and 27 published applications in this corpus.
Search patents in C01B- Granted patents
- 29
- Published applications
- 27
- Assignees
- 23
- Inventors
- 84
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 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 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 0 | 1 |
| 2016 | 1 | 2 |
| 2017 | 3 | 3 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 0 | 4 |
| 2025 | 2 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circular carbon process29 Sep 2026US 12,747,159 B2BASF SE
- Method for producing metal carbide, method for producing hydrocarbon, and metal carbide composition2 Jun 2026US 12,643,838 B2Daikin Industries, Ltd.
- Method for producing metal carbide, method for producing hydrocarbon, and metal carbide composition16 Sep 2025US 12,416,087 B2Daikin Industries, Ltd.
- Process for pure carbon production18 Feb 2025US 12,227,417 B2West Virginia University Board of Governors on behalf of West Virginia University
- Metal carbides and metal nitrides for a fluoride ion battery25 Jul 2023US 11,710,825 B2Honda Motor Co., Ltd.
- Method for producing metal carbide, method for producing hydrocarbon, and metal carbide composition10 Sep 2026US 2026/0265160 A1Daikin Industries, Ltd.
- Methods for producing metal carbide and hydrocarbon, and carbon-containing member5 Feb 2026US 2026/0035804 A1Daikin Industries, Ltd.
- Methods for producing metal carbide and hydrocarbon, and carboncontaining member5 Feb 2026US 2026/0035826 A1Daikin Industries, Ltd.
- Method for producing metal carbide, method for producing hydrocarbon, and metal carbide composition4 Dec 2025US 2025/0369129 A1Daikin Industries, Ltd.
- Method for producing metal carbide, method for producing hydrocarbon, and metal carbide composition29 Aug 2024US 2024/0286974 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Process for production of a carbide by-product with microwave energy and aluminum by electrolysis12US 4,505,787 ASuper Fuel Systems Incorporated · 1985
- Carbide production using molten metals as heat source10US 4,137,295 A1979
- Computerized process and apparatus for use with a submerged arc electric furnace to produce metallurgical products8US 4,213,955 AUnion Carbide Corporation · 1980
- Process for cooling and comminuting molten calcium carbide6US 4,508,666 AHoechst Aktiengesellschaft · 1985
- Apparatus for the carbothermic reduction of metal oxides using solar energy6US 4,627,418 A1986