C01B 4/00
Hydrogen isotopes
Official title: Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD
C01B4/00 (Hydrogen isotopes) appears on 155 US grants and 69 published applications in this corpus.
Search patents in C01B- Granted patents
- 155
- Published applications
- 69
- Assignees
- 88
- Inventors
- 334
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 12 | 0 |
| 1978 | 11 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 8 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 6 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 3 |
| 2013 | 3 | 6 |
| 2014 | 2 | 6 |
| 2015 | 1 | 2 |
| 2016 | 4 | 5 |
| 2017 | 2 | 4 |
| 2018 | 2 | 10 |
| 2019 | 6 | 1 |
| 2020 | 2 | 5 |
| 2021 | 2 | 4 |
| 2022 | 1 | 2 |
| 2023 | 2 | 5 |
| 2024 | 3 | 2 |
| 2025 | 3 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low temperature decontamination of tritiated water16 Sep 2025US 12,415,146 B2Battelle Savannah River Alliance, LLC
- Nanostructured ceramic membranes for hydrogen isotope separation9 Sep 2025US 12,410,072 B2Battelle Savannah River Alliance, LLC
- Triggering exothermic reactions under high hydrogen loading rates10 Jun 2025US 12,327,644 B2IHJ Holdings Ltd.
- Semiconductor manufacturing apparatus and method of manufacturing semiconductor device29 Oct 2024US 12,131,910 B2Kioxia Corporation
- Multicomponent plasmonic photocatalysts consisting of a plasmonic antenna and a reactive catalytic surface: the antenna-reactor effect8 Oct 2024US 12,109,558 B2William Marsh Rice University
- Solid lubricant-dispersed metal hydrides23 Apr 2026US 2026/0109598 A1Battelle Savannah River Alliance, LLC
- Improvements in and relating to tritium extraction and recovery in fusion power systems5 Mar 2026US 2026/0066140 A1UK Atomic Energy Authority
- Method and system for separating a tritiated heavy water stream into a tritium-lean heavy water stream and a tritium-enriched heavy water stream24 Oct 2024US 2024/0350973 A1
- Deuterium recovery method and deuterium recovery equipment18 Jul 2024US 2024/0239655 A1Taiyo Nippon Sanso Corporation
- Low temperature decontamination of tritiated water28 Dec 2023US 2023/0415071 A1Battelle Savannah River Alliance, LLC
Most cited
By later US patents
- Hydrogen permeation membrane92US 4,699,637 AKernforschungsanlage Julich Gesellschaft mit beschrankter Haftung · 1987
- Hydrogen permeatin membrane, process for its manufacture and use66US 4,589,891 AKernforschungsanlage Julich Gesellschaft mit beschrankter Haftung · 1986
- Methods and apparatuses for deuterium recovery42US 9,257,314 B1Poongsan Corporation · 2016
- System for and method of producing and retaining tritium38US 4,663,111 AElectric Power Research Institute, Inc. · 1987
- Enhancing chemical reactions27US 4,124,466 ABattelle Memorial Institute · 1978