C07C 5/2556
With metals
Official title: {with metals}
C07C5/2556 (With metals) appears on 71 US grants and 32 published applications in this corpus.
Search patents in C07C- Granted patents
- 71
- Published applications
- 32
- Assignees
- 37
- Inventors
- 160
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 3 |
| 2019 | 4 | 2 |
| 2020 | 0 | 2 |
| 2021 | 1 | 4 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for purifying isobutene from a C4 stream and process system therefor7 Oct 2025US 12,435,017 B2BASF SE
- Method of producing a fuel additive1 Apr 2025US 12,264,123 B2Sabic Global Technologies B.V.
- Liquid isomerization for methathesis process9 Jul 2024US 12,030,849 B2Technip Process Technology, Inc.
- Method for purifying isobutene from a C4 stream and process system therefor11 Jun 2024US 12,006,285 B2BASF SE
- Method for purifying isobutene from a C4 stream and process system therefor16 May 2023US 11,649,197 B2BASF SE
- Integrated processes for the production of isobutylene, polyisobutylene, and highly reactive polyisobutylene from ethylene and crude c4 streams9 Apr 2026US 2026/0098002 A1NTP Tec, LLC
- Integrated processes for the production of isobutylene, polyisobutylene, and highly reactive polyisobutylene from ethylene and crude c4 streams9 Apr 2026US 2026/0098003 A1NTP Tec, LLC
- Method for obtaining long-chain linear alkenes19 Jun 2025US 2025/0197321 A1Consejo Superior De Investigaciones Cientificas (Csic)
- Method for purifying isobutene from a c4 stream and process system therefor29 Aug 2024US 2024/0286978 A1BASF SE
- Method for purifying isobutene from a c4 stream and process system therefor29 Jun 2023US 2023/0202948 A1BASF SE
Most cited
By later US patents
- Process for isomerizing 1-butene to 2-butene51US 4,132,745 AInstitut Francais du Petrole · 1979
- Double bond hydroisomerization of butenes40US 7,888,541 B2Catalytic Distillation Technologies · 2011
- Process for producing high octane gasoline and particularly lead-free gasoline29US 4,268,701 AInstitut Francais du Petrole · 1981
- Process for production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms25US 6,075,173 AInstitut Francais du Petrole · 2000
- Terminal to interior double bond isomerization process for an olefinic molecule24US 4,749,819 AShell Oil Company · 1988