C07C 2523/31
Combined with bismuth
Official title: combined with bismuth
C07C2523/31 (Combined with bismuth) appears on 24 US grants and 32 published applications in this corpus.
Search patents in C07C- Granted patents
- 24
- Published applications
- 32
- Assignees
- 21
- Inventors
- 91
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 2 | 5 |
| 2017 | 3 | 3 |
| 2018 | 2 | 2 |
| 2019 | 4 | 5 |
| 2020 | 3 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 3 |
| 2025 | 1 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Manufacturing method of butadiene12 Aug 2025US 12,384,735 B2Chiyoda Corporation
- Method for producing butadiene20 Sep 2022US 11,447,435 B2LG Chem.Ltd.
- Process for butadiene production via oxidative dehydrogenation followed by direct dehydrogenation26 May 2020US 10,662,131 B2
- Method for producing butadiene12 May 2020US 10,647,638 B2Jxtg Nippon Oil & Energy Corporation
- Method for preparing 1,3-butadiene from N-butenes by oxidative dehydrogeneation12 May 2020US 10,647,639 B2BASF SE
- Catalysts for oxidative dehydrogenation10 Sep 2026US 2026/0264055 A1NOVA Chemicals (International) S.A.
- Catalyst and process for the dehydrogenation of alkanes to olefins27 Aug 2026US 2026/0249274 A1Dow Global Technologies LLC
- Catalyst and process for the dehydrogenation of alkanes to olefins6 Aug 2026US 2026/0225079 A1Dow Global Technologies LLC
- Chromium-on-alumina catalysts for hydrocarbon dehydrogenation19 Jun 2025US 2025/0196105 A1Clariant International Ltd.
- Catalyst and process for the dehydrogenation of alkanes to olefins24 Oct 2024US 2024/0351004 A1Dow Global Technologies LLC
Most cited
By later US patents
- Method for the oxidative dehydrogenation of ethane46US 7,319,179 B2Consejo Superior de Investigaciones Cientificas · 2008
- Lower alkane oxidative dehydrogenation catalysts and a process for producing olefins23US 6,239,325 B1Nippon Shokubai Co., Ltd. · 2001
- Preparation of acrylonitrile from propylene, oxygen and ammonia in the presence of an alkali metal promoted bismuth, cerium, molybdenum, tungsten catalyst15US 4,746,753 AThe Standard Oil Company · 1988
- Metal oxide catalyst12US 5,478,528 AJohnson Matthey Public Limited Company · 1995
- Process for effecting oxidative dehydrodimerization6US 4,571,443 AThe Standard Oil Company · 1986