C07B 45/02
Formation or introduction of functional groups containing sulfur: of sulfo or sulfonyldioxy
Official title: of sulfo or sulfonyldioxy groups
C07B45/02 (Formation or introduction of functional groups containing sulfur: of sulfo or sulfonyldioxy) appears on 43 US grants and 12 published applications in this corpus.
Search patents in C07B- Granted patents
- 43
- Published applications
- 12
- Assignees
- 28
- Inventors
- 94
- Latest grant
- 28 Dec 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Manufacturing process for cyclodextrin derivatives28 Dec 2021US 11,208,500 B2CyDex Pharmaceuticals, Inc.
- Manufacturing process for cyclodextrin derivatives28 Apr 2020US 10,633,462 B2CyDex Pharmaceuticals, Inc.
- Azasteroidal mimics26 Feb 2019US 10,214,496 B2The Florida International University Board of Trustees
- Manufacturing process for cyclodextrin derivatives5 Sep 2017US 9,751,957 B2CyDex Pharmaceuticals, Inc.
- Method for producing organic compound having sulfo group, method for producing liquid composition, and method for hydrolyzing organic compound having fluorosulfonyl group13 Jan 2015US 8,933,264 B2Asahi Glass Company, Limited
- Manufacturing process for cyclodextrin derivatives20 Oct 2022US 2022/0332853 A1
- Branched Technologies15 Sep 2022US 2022/0289650 A1SCION Holdings LLC
- Manufacturing process for cyclodextrin derivatives21 May 2020US 2020/0157252 A1CyDex Pharmaceuticals, Inc.
- Process and system for the uniform distribution of liquid organic substance in the form of a thin layer into a falling film reactor11 Jul 2019US 2019/0209992 A1Desmet Ballestra S.P.A.
- Azasteroidal Mimics7 Jun 2018US 2018/0155299 A1The Florida International University Board of Trustees
Most cited
By later US patents
- Gas feeder for sulfonation apparatus15US 4,072,470 AKao Soap Co., Ltd. · 1978
- Multitube falling-film reactor11US 5,445,801 AMeccaniche Moderne S.r.l. Chemical Plants Division · 1995
- Sulfonation of aromatic compounds in the presence of solvents10US 3,941,810 A1976
- Process for producing sulfonated solid particles10US 6,821,334 B2Dainichiseika Color & Chemicals Mfg. Co., Ltd. · 2004
- Method and device for the sulfonation or sulfation of sulfonatable or sulfatable organic substances and for performing faster, strongly exothermic gas/liquid reactions10US 7,968,742 B2The Chemithon Corporation · 2011