C07C 2523/04
Alkali metals
C07C2523/04 (Alkali metals) appears on 702 US grants and 378 published applications in this corpus.
Search patents in C07C- Granted patents
- 702
- Published applications
- 378
- Assignees
- 260
- Inventors
- 1,397
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 24 | 0 |
| 1978 | 12 | 0 |
| 1979 | 22 | 0 |
| 1980 | 18 | 0 |
| 1981 | 15 | 0 |
| 1982 | 7 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 19 | 0 |
| 1986 | 17 | 0 |
| 1987 | 26 | 0 |
| 1988 | 18 | 0 |
| 1989 | 16 | 0 |
| 1990 | 26 | 0 |
| 1991 | 31 | 0 |
| 1992 | 29 | 0 |
| 1993 | 14 | 0 |
| 1994 | 18 | 0 |
| 1995 | 14 | 0 |
| 1996 | 8 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 14 | 0 |
| 2001 | 17 | 4 |
| 2002 | 11 | 18 |
| 2003 | 20 | 14 |
| 2004 | 6 | 15 |
| 2005 | 4 | 5 |
| 2006 | 8 | 12 |
| 2007 | 5 | 6 |
| 2008 | 4 | 10 |
| 2009 | 6 | 10 |
| 2010 | 7 | 17 |
| 2011 | 2 | 14 |
| 2012 | 9 | 11 |
| 2013 | 8 | 17 |
| 2014 | 11 | 25 |
| 2015 | 18 | 24 |
| 2016 | 12 | 20 |
| 2017 | 16 | 14 |
| 2018 | 16 | 22 |
| 2019 | 22 | 17 |
| 2020 | 17 | 23 |
| 2021 | 17 | 23 |
| 2022 | 15 | 13 |
| 2023 | 14 | 10 |
| 2024 | 9 | 16 |
| 2025 | 11 | 11 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Catalysts and processes for oxidative dehydrogenation of methane and ethane to produce ethylene, ethane, propane, propylene, and other products1 Sep 2026US 12,723,011 B1
- Olefin production device and olefin production method23 Jun 2026US 12,662,435 B2Mitsubishi Heavy Industries, Ltd.
- Catalysts and processes for oxidative dehydrogenation of methane and ethane to produce ethylene, ethane, propane, propylene, and other products28 Apr 2026US 12,612,345 B1
- Partial oxidative coupling catalyst and olefin production device and olefin production method using catalyst3 Mar 2026US 12,565,544 B2Mitsubishi Heavy Industries, Ltd.
- Method for preparing single-atom, atomic cluster or single-molecular catalyst for oxidative coupling of methane using chemical vapor deposition10 Feb 2026US 12,544,749 B2Korea Institute of Energy Research
- Metal oxide supported atomic quantum clusters (aqcs) catalysts as oxygen carriers for chemical looping processes10 Sep 2026US 2026/0264063 A1Lancaster University
- Oxidative coupling catalyst, method for producing oxidative coupling catalyst, and method for producing hydrocarbons6 Aug 2026US 2026/0225078 A1Mitsubishi Heavy Industries, Ltd.
- Alkane dehydrogenation catalyst23 Jul 2026US 2026/0208178 A1Sabic Global Technologies B.V.
- Chromium alumina catalysts for paraffin dehydrogenation23 Jul 2026US 2026/0209145 A1Sabic Global Technologies B.V.
- Methods for depolymerization of substituted vinyl polymers4 Jun 2026US 2026/0152617 A1Board of Trustees of Michigan State University
Most cited
By later US patents
- Methods for manufacturing olefins from lower alkans by oxidative dehydrogenation140US 6,518,476 B1Union Carbide Chemicals & Plastics Technology Corporation · 2003
- Oxidative coupling of methane with carbon conservation102US 6,096,934 AUop LLC · 2000
- Method for the conversion of methane into longer chain hydrocarbons101US 5,817,904 ARepsol Petroleo S.A. · 1998
- Boron-promoted reducible metal oxides and methods of their use89US 4,777,313 AAtlantic Richfield Company · 1988
- Alkali promoted manganese oxide compositions containing silica and/or alkaline earth oxides83US 4,629,718 AAtlantic Richfield Company · 1986