C01D 7/00
Carbonates of sodium, potassium or alkali metals in general
C01D7/00 (Carbonates of sodium, potassium or alkali metals in general) appears on 471 US grants and 413 published applications in this corpus.
Search patents in C01D- Granted patents
- 471
- Published applications
- 413
- Assignees
- 318
- Inventors
- 1,053
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 18 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 12 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 7 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 10 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 3 |
| 2002 | 9 | 6 |
| 2003 | 8 | 10 |
| 2004 | 3 | 12 |
| 2005 | 4 | 4 |
| 2006 | 6 | 8 |
| 2007 | 1 | 7 |
| 2008 | 5 | 6 |
| 2009 | 9 | 14 |
| 2010 | 11 | 22 |
| 2011 | 5 | 18 |
| 2012 | 10 | 12 |
| 2013 | 12 | 17 |
| 2014 | 20 | 23 |
| 2015 | 23 | 22 |
| 2016 | 13 | 14 |
| 2017 | 15 | 16 |
| 2018 | 16 | 21 |
| 2019 | 12 | 13 |
| 2020 | 15 | 11 |
| 2021 | 9 | 16 |
| 2022 | 11 | 18 |
| 2023 | 13 | 25 |
| 2024 | 15 | 21 |
| 2025 | 18 | 45 |
| 2026 | 14 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01D 7/12Preparation of carbonates from bicarbonates or bicarbonate-containing product106
- C01D 7/22Purification97
- C01D 7/07Preparation from the hydroxides86
- C01D 7/10Preparation of bicarbonates from carbonates58
- C01D 7/35Varying the content of water of crystallisation or the specific gravity41
- C01D 7/38Preparation in the form of granules, pieces or other shaped products35
- C01D 7/18Preparation by the ammonia-soda process31
- C01D 7/14Preparation of sesquicarbonates21
All 13 subgroupsShow fewer
- C01D 7/02Preparation by double decomposition17
- C01D 7/16Preparation from compounds of sodium or potassium with amines and carbon dioxide16
- C01D 7/42Preventing the absorption of moisture or caking10
- C01D 7/06Preparation via sodium or potassium magnesium carbonate5
- C01D 7/08Preparation from or via cyano compounds of sodium or potassium0
Recent patents
- Processes for producing alkali hydroxides or alkali sulfites using large molecular weight acid intermediates6 Oct 2026US 12,753,082 B2Innovator Energy, LLC
- Production of alkali metal carbonates and/or bicarbonates from alkali metal sulphates6 Oct 2026US 12,753,083 B2University of Limpopo
- Method and apparatus for producing carbonate salts22 Sep 2026US 12,741,880 B2Nanomist Technologies Co., Ltd.
- Method of recovering metals from spent li-ion batteries11 Aug 2026US RE50,987 E1Attero Recycling Pvt. Ltd.
- Nanoparticle templates and methods of use for making hollow nanoparticles21 Jul 2026US 12,685,985 B2The Board of Regents of the University of Oklahoma
- Recycled lithium carbonates, positive electrode active materials, and rechargeable lithium batteries8 Oct 2026US 2026/0308002 A1Samsung SDI.Co., Ltd.
- 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 production of clean hydrogen20 Aug 2026US 2026/0242217 A1Posco Holdings Inc.
- Production of Metal Carbonate Soil Amendment from Calcium Slag Silicate20 Aug 2026US 2026/0242303 A1Sabic Agri-Nutrients Company
- Process for producing a carbon product and carbon fibers through a carbon neutral or carbon negative process13 Aug 2026US 2026/0233165 A1Carbon Utility LLC
Most cited
By later US patents
- Sequestration of carbon dioxide146US 7,132,090 B2General Motors Corporation · 2006
- Water soluble blast media containing surfactant130US 5,512,071 AChurch & Dwight Co., Inc. · 1996
- Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale86US 6,609,761 B1American Soda, LLP · 2003
- Gas-liquid contact reaction apparatus67US 4,239,515 AChiyoda Chemical Engineering & Construction Co., Ltd. · 1980
- Apparatus and process for electrodialysis of salts67US 6,221,225 B1Archer Daniels Midland Company · 2001