C07C 7/171
Sulfuric acid or oleum
C07C7/171 (Sulfuric acid or oleum) appears on 19 US grants and 10 published applications in this corpus.
Search patents in C07C- Granted patents
- 19
- Published applications
- 10
- Assignees
- 17
- Inventors
- 47
- Latest grant
- 4 Dec 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Removal of aromatic impurities from an alkene stream using an acid catalyst4 Dec 2018US 10,144,685 B2Saudi Basic Industries Corporation
- Method for removal and recovery of organic amines from a hydrocarbon stream19 Aug 2014US 8,809,611 B2Saudi Basic Industries Corporation
- Solvent treatment methods and polymerization processes employing the treatment methods8 Nov 2011US 8,053,621 B2Bridgestone Corporation
- H2SO4 alkylation by conversion of olefin feed to oligomers and sulfate esters12 Jul 2011US 7,977,525 B2Catalytic Distillation Technologies
- System and method for purifying heptane5 Feb 2008US 7,326,820 B2Chevron Phillips Chemical Company LP
- Process for treating a composition containing renewable isododecane19 Dec 2024US 2024/0417348 A1Haltermann Carless Deutschland GmbH
- Removal of aromatic impurities from an alkene stream using an acid catalyst22 Jun 2017US 2017/0174586 A1Saudi Basic Industries Corporation
- Method for isolation of cymene29 Jan 2015US 2015/0031930 A1Holmen AB
- Method for removal and recovery of organic amines from a hydrocarbon stream29 May 2014US 2014/0148618 A1Saudi Basic Industries Corporation
- H2so4 alkylation by conversion of olefin feed to oligomers and sulfate esters6 Aug 2009US 2009/0198091 A1Catalytic Distillation Technologies
Most cited
By later US patents
- Process to regulate olefin production by catalyst system inhibition42US 5,689,028 APhillips Petroleum Company · 1997
- Oligomerization of unsaturated hydrocarbons with acid catalysts11US 4,024,203 AInstitut Francais du Petrole · 1977
- Process for separating isobutylene from C.sub.4 hydrocarbon mixtures8US 3,979,474 AChemische Werke Huls Aktiengesellschaft · 1976
- Process for obtaining sulfur free pure naphthalene from bituminous coal tar and thionaphthene as a by-product7US 4,098,838 ARutgerswerke Aktiengesellschaft · 1978
- Method of removing organic sulfur compounds from alkylate5US 7,119,244 B2Catalytic Distillation Technologies · 2006