C01B 5/02
Heavy water
Official title: Heavy water; Preparation by chemical reaction of hydrogen isotopes or their compounds, e.g. 4ND3 + 7O2 ---> 4NO2 + 6D2O, 2D2 + O2 ---> 2D2O
C01B5/02 (Heavy water) appears on 75 US grants and 49 published applications in this corpus.
Search patents in C01B- Granted patents
- 75
- Published applications
- 49
- Assignees
- 54
- Inventors
- 133
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 3 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 8 |
| 2018 | 3 | 5 |
| 2019 | 4 | 4 |
| 2020 | 2 | 6 |
| 2021 | 2 | 1 |
| 2022 | 4 | 3 |
| 2023 | 1 | 1 |
| 2024 | 4 | 3 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Isotopic compositions II26 Nov 2024US 12,151,207 B2Botanical Water Technologies IP Ltd
- Semiconductor manufacturing apparatus and method of manufacturing semiconductor device29 Oct 2024US 12,131,910 B2Kioxia Corporation
- Systems and methods for activating and dewatering sludge using acoustic pressure shock waves8 Oct 2024US 12,110,238 B2Sanuwave, Inc.
- Apparatus and method for concentrating hydrogen isotopes3 Sep 2024US 12,076,691 B2Skyre, Inc.
- In situ apparatus and method for providing deuterium oxide or tritium oxide in an industrial apparatus or method16 May 2023US 11,649,165 B2Sustainable Innovations, LLC
- Doubly labeled water with enhanced protocol30 Oct 2025US 2025/0334581 A1Calorify, Inc.
- Doubly labeled water with enhanced protocol10 Jul 2025US 2025/0224403 A1Calorify, Inc.
- Products comprising deuterium-enriched water12 Dec 2024US 2024/0409405 A1Lennham Pharmaceuticals, Inc.
- 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
Most cited
By later US patents
- Process for hydrogen isotope concentration between liquid water and hydrogen gas18US 3,981,976 AAtomic Energy of Canada Limited · 1976
- Method and apparatus for the production of heavy oxygen water18US 6,321,565 B1Nippon Sanso Corporation · 2001
- Method and apparatus for tritiated water separation14US 5,451,322 ABattelle Memorial Institute · 1995
- Systems and methods for separating heavy water from normal water using acoustic pressure shock waves13US 10,562,793 B2Sanuwave, Inc. · 2020
- Process for the exchange of hydrogen isotopes between streams of gaseous hydrogen and liquid water10US 4,143,123 AAtomic Energy of Canada Limited · 1979