C07C 11/16
With four carbon atoms
Official title: with four carbon atoms
C07C11/16 (With four carbon atoms) appears on 108 US grants and 137 published applications in this corpus.
Search patents in C07C- Granted patents
- 108
- Published applications
- 137
- Assignees
- 63
- Inventors
- 296
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 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 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 5 |
| 2008 | 1 | 1 |
| 2009 | 3 | 0 |
| 2010 | 1 | 3 |
| 2011 | 1 | 4 |
| 2012 | 3 | 0 |
| 2013 | 3 | 7 |
| 2014 | 1 | 2 |
| 2015 | 4 | 3 |
| 2016 | 4 | 8 |
| 2017 | 2 | 5 |
| 2018 | 6 | 31 |
| 2019 | 20 | 30 |
| 2020 | 23 | 12 |
| 2021 | 12 | 7 |
| 2022 | 8 | 4 |
| 2023 | 3 | 6 |
| 2024 | 2 | 1 |
| 2025 | 4 | 5 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Catalyst loading method and method for preparation of butadiene by using same29 Jul 2025US 12,370,517 B2LG Chem.Ltd.
- Antifoulant compositions for high-severity processing of vinylic monomer streams1 Jul 2025US 12,344,581 B2Ecolab USA Inc.
- Molecular sieves mediated unsaturated hydrocarbon separation and related compositions, materials, methods and systems14 Jan 2025US 12,195,426 B2California Institute of Technology
- Upgrading streams comprising C3 and C4 hydrocarbons31 Dec 2024US 12,180,154 B2Kellogg Brown & Root LLC
- Processes for producing nitriles and phosphorus-containing catalysts for use in such processes5 Feb 2026US 2026/0034540 A1INV Nylon Chemicals Americas, LLC
- Antifoulant compositions for high-severity processing of vinylic monomer streams11 Sep 2025US 2025/0282698 A1Ecolab USA Inc.
- Catalyst for the production of 1,3-butadiene giving a high yield based on a support comprising aluminium and sodium4 Sep 2025US 2025/0276305 A1Ecovyst, Inc
- Composite oxide, preparation method for composite oxide, hydrogenation catalyst and use thereof26 Jun 2025US 2025/0205685 A1China Petroleum & Chemical Corporation
- Molecular sieves mediated unsaturated hydrocarbon separation and related compositions, materials, methods and systems27 Mar 2025US 2025/0100957 A1California Institute of Technology
Most cited
By later US patents
- Preparation of butadiene86US 7,482,500 B2BASF SE · 2009
- Method for the production of butadiene and 1-butene81US 7,488,857 B2BASF SE · 2009
- Method for making industrial chemicals33US 7,960,599 B2Elevance Renewable Sciences, Inc. · 2011
- Production of high purity butene-1 from an n-butane feedstock23US 4,558,168 AAir Products and Chemicals, Inc. · 1985
- Process for producing 1,3-butadiene20US 4,504,692 AJapan Synthetic Rubber Co., Ltd. · 1985