C07C 2523/56
Platinum group metals
C07C2523/56 (Platinum group metals) appears on 362 US grants and 364 published applications in this corpus.
Search patents in C07C- Granted patents
- 362
- Published applications
- 364
- Assignees
- 184
- Inventors
- 1,048
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 12 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 13 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 5 |
| 2004 | 2 | 13 |
| 2005 | 2 | 14 |
| 2006 | 4 | 10 |
| 2007 | 4 | 4 |
| 2008 | 7 | 13 |
| 2009 | 1 | 7 |
| 2010 | 6 | 10 |
| 2011 | 7 | 8 |
| 2012 | 7 | 9 |
| 2013 | 5 | 4 |
| 2014 | 4 | 14 |
| 2015 | 12 | 16 |
| 2016 | 8 | 9 |
| 2017 | 14 | 12 |
| 2018 | 4 | 17 |
| 2019 | 20 | 31 |
| 2020 | 18 | 17 |
| 2021 | 25 | 31 |
| 2022 | 18 | 30 |
| 2023 | 19 | 22 |
| 2024 | 15 | 26 |
| 2025 | 16 | 20 |
| 2026 | 12 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 2523/62With gallium, indium, thallium, germanium, tin or leadIndexing code182
- C07C 2523/64With arsenic, antimony, bismuth, vanadium, niobium, tatalum, polonium, chromium, molybdenum, tungsten, manganeseIndexing code117
- C07C 2523/58With alkali- or alkaline earth metals or berylliumIndexing code47
- C07C 2523/63With rare earths or actinidesIndexing code44
- C07C 2523/60With zinc, cadmium or mercuryIndexing code23
Recent patents
- Transition metal carbides for catalytic dehydrogenation of short alkanes4 Aug 2026US 12,698,246 B2Iowa State University Research Foundation, Inc.
- Method and system for light olefin generation with high yields and selectivity21 Jul 2026US 12,686,655 B2ExxonMobil Chemical Patents Inc.
- Processes for dehydrogenating alkanes and alkyl aromatic hydrocarbons23 Jun 2026US 12,662,436 B2ExxonMobil Chemical Patents Inc.
- Process for producing renewable mono-methyl alkylbenzene products9 Jun 2026US 12,649,702 B2Uop LLC
- Processes for dehydrogenating alkanes and alkyl aromatic hydrocarbons9 Jun 2026US 12,649,704 B2ExxonMobil Chemical Patents Inc.
- Spherical alumina and supported catalyst, and preparation methods and use thereof17 Sep 2026US 2026/0273511 A1Dalian University of Technology
- Process for producing renewable mono-methyl alkylbenzene products17 Sep 2026US 2026/0274769 A1Uop LLC
- Methods for making light olefins by dehydrogenation using catalysts that include manganese17 Sep 2026US 2026/0274771 A1Dow Global Technologies LLC
- Processes for preparing c2 to c4 hydrocarbons using hybrid catalysts27 Aug 2026US 2026/0250581 A1Dow Global Technologies LLC
- Catalyst Compositions and Processes for Making and Using Same13 Aug 2026US 2026/0233203 A1
Most cited
By later US patents
- Catalyst direct conversion of methane to ethane and ethylene70US 7,902,113 B2Research Institute of Petroleum Industry (RIPI) · 2011
- Process for liquid phase hydrogenation62US 7,045,670 B2Synfuels International, Inc. · 2006
- Selective hydrogenation of alkynes and/or diolefins62US 7,199,273 B2ExxonMobil Chemical Patents Inc. · 2007
- Hydrogenation catalyst and process for the selective hydrogenation of highly unsaturated hydrocarbons60US 4,329,530 AImperial Chemical Industries PLC · 1982
- Catalyst for the dehydrogenation of C.sub.6 -C.sub.15 paraffins and to a process for making such catalysts58US 5,849,657 ADegussa AG · 1998