Compounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium
Official title: COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts of peroxyacids C01B15/00; sulfides C01B17/22; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds other than ammonia and cyanogen, containing nitrogen and other non-metals C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; phosphides C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; cyanides C01C3/08; salts of cyanic acid C01C3/14; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
C01D (Compounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium) appears on 2,266 US grants and 2,406 published applications in this corpus.
Search patents in C01D- Granted patents
- 2,266
- Published applications
- 2,406
- Assignees
- 1,456
- Inventors
- 5,969
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 49 | 0 |
| 1977 | 46 | 0 |
| 1978 | 44 | 0 |
| 1979 | 30 | 0 |
| 1980 | 34 | 0 |
| 1981 | 52 | 0 |
| 1982 | 31 | 0 |
| 1983 | 37 | 0 |
| 1984 | 36 | 0 |
| 1985 | 29 | 0 |
| 1986 | 24 | 0 |
| 1987 | 20 | 0 |
| 1988 | 21 | 0 |
| 1989 | 21 | 0 |
| 1990 | 17 | 0 |
| 1991 | 26 | 0 |
| 1992 | 33 | 0 |
| 1993 | 31 | 0 |
| 1994 | 28 | 0 |
| 1995 | 29 | 0 |
| 1996 | 28 | 0 |
| 1997 | 37 | 0 |
| 1998 | 24 | 0 |
| 1999 | 36 | 0 |
| 2000 | 35 | 0 |
| 2001 | 37 | 8 |
| 2002 | 35 | 15 |
| 2003 | 24 | 42 |
| 2004 | 22 | 32 |
| 2005 | 19 | 28 |
| 2006 | 22 | 37 |
| 2007 | 15 | 20 |
| 2008 | 15 | 34 |
| 2009 | 21 | 42 |
| 2010 | 28 | 67 |
| 2011 | 28 | 68 |
| 2012 | 42 | 63 |
| 2013 | 53 | 90 |
| 2014 | 68 | 142 |
| 2015 | 77 | 96 |
| 2016 | 73 | 77 |
| 2017 | 73 | 91 |
| 2018 | 81 | 119 |
| 2019 | 81 | 129 |
| 2020 | 106 | 111 |
| 2021 | 88 | 144 |
| 2022 | 77 | 154 |
| 2023 | 90 | 172 |
| 2024 | 106 | 204 |
| 2025 | 107 | 246 |
| 2026 | 80 | 175 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
- C01D 15/00Lithium compounds777
- C01D 3/00Halides of sodium, potassium or alkali metals in general595
- C01D 7/00Carbonates of sodium, potassium or alkali metals in general471
- C01D 5/00Sulfates or sulfites of sodium, potassium or alkali metals in general322
- C01D 1/00Oxides or hydroxides of sodium, potassium or alkali metals in general282
- C01D 9/00Nitrates of sodium, potassium or alkali metals in general74
- C01D 17/00Rubidium, caesium or francium compounds73
- C01D 13/00Compounds of sodium or potassium not provided for elsewhere66
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 for producing lithium hydroxide29 Sep 2026US 12,747,162 B2Dongwoo Fine-Chem Co., Ltd.
- Method and apparatus for producing carbonate salts22 Sep 2026US 12,741,880 B2Nanomist Technologies Co., Ltd.
- High-performance sodium ion electrolytes and efficient methods for making the same15 Sep 2026US 12,735,326 B2The Florida State University Research Foundation, Inc.
- Recycled lithium carbonates, positive electrode active materials, and rechargeable lithium batteries8 Oct 2026US 2026/0308002 A1Samsung SDI.Co., Ltd.
- Device for producing lithium carbonate crystals8 Oct 2026US 2026/0308003 A1K-Utec AG Salt Technologies
- Systems and methods for lithium extraction from aqueous feedstocks1 Oct 2026US 2026/0295534 A1University of Utah Research Foundation
- Continuous fluidized-bed, flash joule heating reactor and method for halogenation of metal-containing feeds1 Oct 2026US 2026/0295549 A1Flash Metals USA Inc.
- High-efficiency method for producing lithium hydroxide from lithium carbonate through process improvement1 Oct 2026US 2026/0296907 A1Korea Institute of Geoscience and Mineral Resources
Most cited
- Hydrogen generation by hydrolysis of hydrides for undersea vehicle fuel cell energy systems197US 5,372,617 AThe Charles Stark Draper Laboratory, Inc. · 1994
- Sequestration of carbon dioxide146US 7,132,090 B2General Motors Corporation · 2006
- Photoelectrochemical device containing a quantum confined group IV semiconductor nanoparticle133US 6,361,660 B12002
- Water soluble blast media containing surfactant130US 5,512,071 AChurch & Dwight Co., Inc. · 1996
- Bipolar membranes and method of making same111US 4,116,889 AAllied Chemical Corporation · 1978