C07C 11/08
With four carbon atoms
Official title: with four carbon atoms
C07C11/08 (With four carbon atoms) appears on 149 US grants and 139 published applications in this corpus.
Search patents in C07C- Granted patents
- 149
- Published applications
- 139
- Assignees
- 80
- Inventors
- 435
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 5 |
| 2003 | 1 | 1 |
| 2004 | 2 | 2 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 2 | 2 |
| 2012 | 0 | 4 |
| 2013 | 2 | 5 |
| 2014 | 2 | 2 |
| 2015 | 5 | 1 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 1 | 20 |
| 2019 | 16 | 23 |
| 2020 | 21 | 19 |
| 2021 | 16 | 19 |
| 2022 | 17 | 3 |
| 2023 | 7 | 6 |
| 2024 | 6 | 6 |
| 2025 | 8 | 5 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing α-olefin18 Aug 2026US 12,709,656 B2Idemitsu Kosan Co., Ltd.
- Process for separating 1-butene from C4 raffinate gas composition23 Dec 2025US 12,503,415 B2King Fahd University of Petroleum and Minerals
- Oligomerisation process comprising a step of recycling a pre-cooled solvent25 Nov 2025US 12,479,780 B2Ifp Energies Nouvelles
- Process for removing butenes from C4-hydrocarbon streams and two-stage evaporation18 Nov 2025US 12,473,245 B2Evonik Oxeno GmbH
- Systems and methods for enhancing the extractive section operability and modifying solvent heat recovery cycle in the separation of C4 mixtures2 Sep 2025US 12,404,222 B2Sabic Global Technologies B.V.
- 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
- Methods for forming light olefins with catalyst recycle9 Jul 2026US 2026/0193157 A1Dow Global Technologies LLC
- Lewis acid base pairs as highly active catalytic sites for hydrogenation and dehydrogenation processes2 Jul 2026US 2026/0183748 A1BASF SE
- Methods for producing light olefins2 Jul 2026US 2026/0184654 A1Dow Global Technologies LLC
- Process for purifying a raw c4-hydrocarbon mixture6 Nov 2025US 2025/0340497 A1BASF SE
Most cited
By later US patents
- Flexible light olefins production100US 5,523,502 AStone & Webster Engineering Corp. · 1996
- Process for preparation of lower aliphatic hydrocarbons45US 5,191,131 AResearch Association for Utilization of Light Oil · 1993
- Integrated process for the production of butene-128US 5,955,640 AEnichem S.p.A. · 1999
- 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