C01B 6/21
Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or beryllium
Official title: Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or beryllium; Addition complexes thereof, e.g. LiBH4.2N2H4, NaB2H7
C01B6/21 (Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or beryllium) appears on 85 US grants and 103 published applications in this corpus.
Search patents in C01B- Granted patents
- 85
- Published applications
- 103
- Assignees
- 70
- Inventors
- 227
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 3 | 5 |
| 2004 | 1 | 4 |
| 2005 | 1 | 14 |
| 2006 | 7 | 6 |
| 2007 | 7 | 9 |
| 2008 | 4 | 6 |
| 2009 | 3 | 9 |
| 2010 | 6 | 7 |
| 2011 | 2 | 2 |
| 2012 | 9 | 2 |
| 2013 | 6 | 2 |
| 2014 | 3 | 2 |
| 2015 | 2 | 5 |
| 2016 | 1 | 3 |
| 2017 | 3 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 3 |
| 2020 | 0 | 1 |
| 2021 | 4 | 8 |
| 2022 | 3 | 3 |
| 2023 | 5 | 3 |
| 2024 | 3 | 1 |
| 2025 | 2 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sodium borohydride production method22 Sep 2026US 12,741,869 B2Nippon Light Metal Company, Ltd.
- Sodium borohydride production method3 Jun 2025US 12,319,583 B2Nippon Light Metal Company, Ltd.
- Method for producing tetrahydroboric acid salt, device for producing tetrahydroboric acid salt, and tetrahydroboric acid salt15 Apr 2025US 12,275,643 B2Sintokogio, Ltd.
- Device and method for producing tetrahydroborate26 Nov 2024US 12,151,944 B2Sintokogio, Ltd.
- Ionic conductor and electricity storage device10 Sep 2024US 12,087,905 B2Niterra Co., Ltd.
- Method for producing metal borohydride from metal boron oxide16 Jul 2026US 2026/0200730 A1H2Fuel-Systems B.V.
- Hydride ion conductor and preparation method thereof11 Jun 2026US 2026/0159387 A1Gwangju Institute of Science and Technology
- Sodium borohydride production method26 Feb 2026US 2026/0054983 A1National Institute of Advanced Industrial Science and Technology
- Method of producing a metal borohydride or boric acid from metal metaborate5 Jun 2025US 2025/0179658 A1H2Fuel Works B.V.
- Method of regenerating sodium borohydride27 Mar 2025US 2025/0100878 A1Hyundai Motor Company
Most cited
By later US patents
- Compositions and processes for synthesizing borohydride compounds54US 6,433,129 B1Millennium Cell, Inc. · 2002
- Processes for synthesizing alkali metal borohydride compounds51US 6,586,563 B1Millennium Cell, Inc. · 2003
- Processes for synthesizing borohydride compounds46US 6,524,542 B2Millennium Cell, Inc. · 2003
- Processes for synthesizing borohydride compounds45US 6,670,444 B2Millennium Cell, Inc. · 2003
- Method of generating hydrogen by reaction of borohydrides and hydrates34US 6,821,499 B2General Motors Corporation · 2004