C01C 3/0229
From hydrocarbons and ammonia in the absence of oxygen
Official title: {from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process}
C01C3/0229 (From hydrocarbons and ammonia in the absence of oxygen) appears on 58 US grants and 27 published applications in this corpus.
Search patents in C01C- Granted patents
- 58
- Published applications
- 27
- Assignees
- 22
- Inventors
- 123
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 3 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cyanide on demand11 Mar 2025US 12,246,970 B2Haldor TopsøE A/S
- Method for producing hydrogen cyanide13 Feb 2024US 11,897,781 B2Evonik Operations GmbH
- Method for preparing methionine26 Jan 2021US 10,899,706 B2Evonik Operations GmbH
- Process for the catalytic preparation of hydrogen cyanide from methane and ammonia14 Jul 2020US 10,710,057 B2Haldor Topsoe A/S
- High purity HCN from acrylonitrile co-production12 May 2020US 10,647,663 B2Invista North America S A R L
- Apparatus for the production of nitriles and use thereof17 Sep 2026US 2026/0273491 A1Evonik Operations GmbH
- Catalytically active heating elements, production and use thereof7 May 2026US 2026/0129720 A1Evonik Operations GmbH
- Cyanide on demand18 Aug 2022US 2022/0259056 A1Haldor TopsøE A/S
- Method for preparing methionine16 Apr 2020US 2020/0115334 A1Evonik Degussa GmbH
- Method for producing hydrogen cyanide25 Jul 2019US 2019/0225501 A1Evonik Degussa GmbH
Most cited
By later US patents
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions202US 5,306,411 AThe Standard Oil Company · 1994
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions99US 5,744,015 A1998
- Ceramic membranes for catalytic membrane reactors with high ionic conductivities and low expansion properties91US 6,146,549 AEltron Research, Inc. · 2000
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions51US 5,693,212 AThe Standard Oil Company · 1997
- Processes for the synthesis of hydrogen cyanide38US 5,817,286 AThermatrix, Inc. · 1998