C01G 37/08
Chromium sulfates
C01G37/08 (Chromium sulfates) appears on 8 US grants and 3 published applications in this corpus.
Search patents in C01G- Granted patents
- 8
- Published applications
- 3
- Assignees
- 8
- Inventors
- 31
- Latest grant
- 3 Mar 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Process for recycling chromium from waste water containing hexavalent chromium3 Mar 2020US 10,577,676 B2Hunan Yonker Environmental Protection Research Institute Co., LTD
- Re-calcination and extraction process for the detoxification and comprehensive utilization of chromic residues7 Mar 1995US 5,395,601 A
- Method of regulating the throughput in the electrochemical regeneration of chromosulfuric acid21 Feb 1995US 5,391,266 AHoechst Aktiengesellschaft
- Process for recovering chromic anhydride from exhausted aqueous chromium plating bath solutions with exploitation of the recovered chromium12 May 1992US 5,112,583 ALuigi Stoppani S.p.A.
- Production of chromium (III) compounds9 Jul 1985US 4,528,175 AAllied Corporation
- Process of extracting nickel sulfate from asbestos mining residue9 Jan 2025US 2025/0011956 A1Alliance MagnéSium
- Process for recycling chromium from waste water containing hexavalent chromium21 Sep 2017US 2017/0268080 A1Hunan Yonker Environmental Protection Research Institute Co., LTD
- Chromium (iii)-containing aqueous solution and process for producing the same7 Jul 2011US 2011/0162556 A1Nippon Chemical Industrial Co., Ltd.
Most cited
By later US patents
- Process for recovering proteins and chromium from chrome-tanning waste10US 4,483,829 A1984
- Recovery of potential energy and chromium values from leather tannery wastes5US 4,332,584 ASystems Consultants, Inc. · 1982
- Production of chromium (III) compounds5US 4,528,175 AAllied Corporation · 1985
- Process for the manufacture of basic chrome tanning agents soluble in coldwater3US 3,966,402 ABASF SE · 1976
- Re-calcination and extraction process for the detoxification and comprehensive utilization of chromic residues3US 5,395,601 A1995