C01B 25/41
Of alkali metals
Official title: of alkali metals
C01B25/41 (Of alkali metals) appears on 69 US grants and 12 published applications in this corpus.
Search patents in C01B- Granted patents
- 69
- Published applications
- 12
- Assignees
- 29
- Inventors
- 128
- Latest grant
- 23 Nov 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Renewable magnesium removing agent and its use in preparation of low-magnesium lithium-rich brine23 Nov 2021US 11,180,369 B2Qinghai Institute of Salt Lakes, Chinese Academy of Sciences
- Solid electrolyte and all-solid-state battery10 Dec 2019US 10,505,185 B2Fujitsu Limited
- Collector for beneficiating carbonaceous phosphate ores8 Oct 2019US 10,434,520 B2Arr-Maz Products, L.P.
- Positive electrode active material for lithium ion battery, method of producing the same, electrode for lithium ion battery, and lithium ion battery5 Jan 2016US 9,231,244 B2Sumitomo Osaka Cement Co., Ltd.
- Sodium-potassium hexametaphosphate and potassium metaphosphate with a low insolubles content29 Nov 2011US 8,067,321 B2ICL Performance Products LP
- Polyphosphate materials28 Nov 2024US 2024/0391775 A1
- Renewable magnesium removing agent and its use in preparation of low-magnesium lithium-rich brine12 Aug 2021US 2021/0246025 A1Qinghai Institute of Salt Lakes, Chinese Academy of Sciences
- Collector for beneficiating carbonaceous phosphate ores15 Feb 2018US 2018/0043373 A1Arr-Maz Products, L.P.
- Short-Chain Potassium Polyphosphate Compositions and Methods of Making16 Nov 2017US 2017/0327375 A1ICL Performance Products LP
- Solid electrolyte and all-solid-state battery9 Nov 2017US 2017/0324087 A1Fujitsu Limited
Most cited
By later US patents
- Poly(arylether-sulfone) semipermeable membrane comprising substituted halomethyl and/or quaternary nitrogen groups42US 4,029,582 ADaicel Corporation · 1977
- Surface treated silica22US 4,029,513 APhiladephia Quartz Company · 1977
- Method of recovering phosphate for reuse as a fertilizer20US 7,588,744 B1Layne Christensen Company · 2009
- Method for the preparation of fibrous insoluble calcium sulfate anhydrite19US 4,029,512 AJohns Manville · 1977
- Process for making sodium tripolyphosphate16US 4,536,377 AFMC Corporation · 1985