C01D 7/18
Preparation by the ammonia-soda process
Official title: Preparation by the ammonia-soda process {(C01D7/12 takes precedence)}
C01D7/18 (Preparation by the ammonia-soda process) appears on 31 US grants and 21 published applications in this corpus.
Search patents in C01D- Granted patents
- 31
- Published applications
- 21
- Assignees
- 26
- Inventors
- 102
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 3 | 3 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 4 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reaction system for preparing soda ash6 May 2025US 12,291,460 B1Nanjing Institute of Microinterface Technology Co., Ltd
- Method for producing soda ash31 Dec 2024US 12,180,083 B1United Arab Emirates University
- Multistage desalination process with carbon dioxide capture14 Nov 2023US 11,814,309 B1United Arab Emirates University
- Sodium carbonate production system7 Jul 2020US 10,702,790 B1
- Method and apparatus on halting global warming11 Jul 2017US 9,701,543 B2
- Method for production of clean hydrogen20 Aug 2026US 2026/0242217 A1Posco Holdings Inc.
- Reaction system for preparing soda ash and reaction method8 May 2025US 2025/0145483 A1Nanjing Institute of Microinterface Technology Co., Ltd
- Process for producing sodium carbonate/bicarbonate21 Jun 2018US 2018/0169567 A1Solvay SA
- Process for producing sodium carbonate/bicarbonate22 Feb 2018US 2018/0050916 A1Solvay SA
- Process for manufacturing an aqueous sodium chloride solution22 Feb 2018US 2018/0050919 A1Solvay SA
Most cited
By later US patents
- Gas-liquid contact reaction apparatus67US 4,239,515 AChiyoda Chemical Engineering & Construction Co., Ltd. · 1980
- Method and apparatus for optimizing and controlling gas-liquid phase chemical reactions43US 5,730,875 ARevtech Industries, Inc. · 1998
- Process for producing sodium bicarbonate from natural soda salts30US 5,275,794 A1994
- Process for producing sodium carbonate, sodium bicarbonate and associated compounds12US 5,270,023 A1993
- Electrolytic manufacture of chlorine and sodium carbonate11US 3,944,474 ASolvay & Cie · 1976