C01D 7/12
Preparation of carbonates from bicarbonates or bicarbonate-containing product
Official title: Preparation of carbonates from bicarbonates {or bicarbonate-containing product}
C01D7/12 (Preparation of carbonates from bicarbonates or bicarbonate-containing product) appears on 106 US grants and 88 published applications in this corpus.
Search patents in C01D- Granted patents
- 106
- Published applications
- 88
- Assignees
- 60
- Inventors
- 215
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 2 |
| 2002 | 1 | 3 |
| 2003 | 6 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 1 | 4 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 5 | 1 |
| 2010 | 3 | 6 |
| 2011 | 1 | 7 |
| 2012 | 0 | 2 |
| 2013 | 3 | 5 |
| 2014 | 5 | 5 |
| 2015 | 3 | 9 |
| 2016 | 5 | 3 |
| 2017 | 3 | 4 |
| 2018 | 2 | 3 |
| 2019 | 3 | 1 |
| 2020 | 1 | 2 |
| 2021 | 2 | 4 |
| 2022 | 6 | 6 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 3 | 3 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for treating a sodium carbonate purge7 Oct 2025US 12,434,976 B1Solvay SA
- Soda ash and sodium bicarbonate production method1 Apr 2025US 12,264,079 B2China Tianchen Engineering Corporation
- Process for preparing chemically modified bicarbonate salt particles21 Jan 2025US 12,202,735 B2Steerlife India Private Limited
- Method for producing soda ash31 Dec 2024US 12,180,083 B1United Arab Emirates University
- Chemical sequestering of CO2, NOx and SO22 Jan 2024US 11,857,920 B2
- System for generation of blue hydrogen through natural gas reforming, carbon dioxide capture, carbon resource utilization, and reaction product storage, and method therefor3 Sep 2026US 2026/0257913 A1Lowcarbon Co., Ltd.
- Method for extracting potassium bicarbonate from mineral mixtures14 May 2026US 2026/0132039 A1Kellium Minerals LLC
- Freeze desalination method via injection of dry ice field16 Apr 2026US 2026/0103404 A1Prd Tech, Inc.
- Carbon capture system for production of soda ash, baking soda, methanol, & formaldehyde5 Mar 2026US 2026/0061360 A1Agc Carbon Inc.
- Mixed metal air batteries5 Mar 2026US 2026/0066268 A1AGC Power Inc.
Most cited
By later US patents
- Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale86US 6,609,761 B1American Soda, LLP · 2003
- Production of sodium carbonate from solution mine brine59US 5,955,043 ATg Soda Ash, Inc. · 1999
- Process for producing sodium salts from brines of sodium ores57US 5,283,054 AFMC Corporation · 1994
- Process for producing sodium salts from brines of sodium ores47US 5,262,134 AFMC Corporation · 1993
- Equilibrium production of sodium carbonate from sodium bicarbonate43US 5,609,838 ATg Soda Ash, Inc. · 1997