C07C 11/09
Isobutene
C07C11/09 (Isobutene) appears on 38 US grants and 32 published applications in this corpus.
Search patents in C07C- Granted patents
- 38
- Published applications
- 32
- Assignees
- 31
- Inventors
- 139
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 4 |
| 2003 | 1 | 0 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 1 |
| 2015 | 3 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 3 |
| 2019 | 2 | 6 |
| 2020 | 4 | 1 |
| 2021 | 3 | 4 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for obtaining isobutene from a C4-hydrocarbon mixture8 Jul 2025US 12,351,536 B2BASF SE
- Method of preparation of dehydrogenation catalyst with high chromium content22 Oct 2024US 12,121,887 B2Sabic Global Technologies B.V.
- Catalyst composition comprising modified crystalline aluminosilicate for dehydration of alcohols21 Feb 2023US 11,584,698 B2Total Research & Technology Feluy
- Sulfur injection in fluidization bed dehydrogenation on chromium catalyst for dehydrogenation process improvement and process scheme optimization14 Jun 2022US 11,358,917 B2Sabic Global Technologies B.V.
- Method for the isomerizing dehydration of a non-linear primary alcohol feedstock in the presence of water injection and a catalyst comprising a FER or MFS zeolite25 Jan 2022US 11,230,511 B2Ifp Energies Nouvelles
- Process for the preparation of polyisobutene from olefins from isobutanol obtained from mixed guerbet reaction of ethanol and methanol8 Oct 2026US 2026/0308287 A1BASF SE
- Lewis acid base pairs as highly active catalytic sites for hydrogenation and dehydrogenation processes2 Jul 2026US 2026/0183748 A1BASF SE
- Process for purifying a raw c4-hydrocarbon mixture6 Nov 2025US 2025/0340497 A1BASF SE
- Process for obtaining isobutene from a c4-hydrocarbon mixture12 Sep 2024US 2024/0300875 A1BASF SE
- Hydrocarbon pyrolysis of feeds containing nitrogen18 May 2023US 2023/0151283 A1
Most cited
By later US patents
- Process for selective production of propylene from hydrocarbon fractions with four carbon atoms26US 6,916,448 B2Institut Francais du Petrole · 2005
- Process employing sequential isobutylene hydration and etherification25US 4,423,251 AUop LLC · 1983
- Process for production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms25US 6,075,173 AInstitut Francais du Petrole · 2000
- Process for producing high purity isobutene by dehydrating tertiary butanol18US 4,423,271 AChemische Werke Huls Aktiengesellschaft · 1983
- Production of isobutene from methyl tertiary butyl ether18US 4,570,026 APetro-Tex Chemical Corporation · 1986