C01C 1/20
Sulfides
Official title: Sulfides; Polysulfides
C01C1/20 (Sulfides) appears on 6 US grants and 2 published applications in this corpus.
Search patents in C01C- Granted patents
- 6
- Published applications
- 2
- Assignees
- 5
- Inventors
- 19
- Latest grant
- 20 Aug 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Crystallization column and crystallization method20 Aug 2019US 10,384,148 B2China Petroleum & Chemical Corporation
- Waste water process with scrubber17 Apr 2007US 7,204,967 B2
- Polysulfide solutions and hydroxalkylaminium ions for stabilizing elemental sulfur12 Aug 2003US 6,605,234 B1Baker Hughes Incorporated
- Process for the electrochemical production of ammonium polysulfide10 Jun 1997US 5,637,206 AMetallgesellschaft Aktiengesellschaft
- Stabilized ammonium polysulfide solutions and process utilizing same27 Dec 1994US 5,376,749 AThe Western Company of North America
Most cited
By later US patents
- Waste water process with scrubber14US 7,204,967 B22007
- Stabilized ammonium polysulfide solutions and process utilizing same8US 5,376,749 AThe Western Company of North America · 1994
- Polysulfide solutions and hydroxalkylaminium ions for stabilizing elemental sulfur5US 6,605,234 B1Baker Hughes Incorporated · 2003
- Process for making silicon monosulfide and aluminum sulfide4US 5,227,149 A1993