C01C 1/028
From ammonium sulfate or sulfite
Official title: {from ammonium sulfate or sulfite}
C01C1/028 (From ammonium sulfate or sulfite) appears on 19 US grants and 14 published applications in this corpus.
Search patents in C01C- Granted patents
- 19
- Published applications
- 14
- Assignees
- 26
- Inventors
- 54
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 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 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates5 May 2026US 12,618,162 B2Innovator Energy, LLC
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates16 Sep 2025US 12,416,086 B2Innovator Energy, LLC
- Method for preparing ammonia by using ammonium salt and silicate26 Aug 2025US 12,398,044 B2Yuanchu Technology (Beijing) Co., Ltd.
- Integrated processes for treatment of an ammonium fluorosulfate byproduct of the production of bis (fluorosulfonyl) imide3 Oct 2023US 11,772,967 B2Honeywell International Inc.
- Cyclic process for producing taurine from monoethanolamine2 Nov 2021US 11,161,808 B1Vitaworks IP, LLC
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates13 Aug 2026US 2026/0234812 A1Innovator Energy, LLC
- Methods for preparation of ca nutrient to support carbon neutrality4 Dec 2025US 2025/0367598 A1Sabic Agri-Nutrients Company
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates20 Nov 2025US 2025/0354274 A1Innovator Energy, LLC
- Alkali hydroxide production from alkali sulfate with halogen or carboxylic acid intermediates24 Jul 2025US 2025/0236963 A1Innovator Energy, LLC
- Extraction of ammonia and sulfuric acid from ammonium-sulfate-rich (waste) waters10 Oct 2024US 2024/0335793 A1Evonik Operations GmbH
Most cited
By later US patents
- Process for converting ammonium imidodisulfate, ammonium sulfamate and ammonium dithionate to sulfur dioxide and ammonia16US 4,220,634 AInstitut Francais du Petrole · 1980
- Process for producing sulfur from sulfur dioxide or ammonium sulfites8US 4,003,986 A1977
- Method of producing potassium sulfate8US 6,315,976 B1Airborne Industrial Minerals Inc. · 2001
- Catalytic conversion of an ammonium sulfate to sulfur dioxide and ammonia4US 4,081,515 AInstitut Francais du Petrole · 1978
- Process for the recovery of ammonia and sulphur dioxide from a contaminated ammonium salt of sulphuric acid4US 4,208,390 ANittetu Chemical Engineering Ltd. (NICE) · 1980