B01D 59/00
Separation of different isotopes of the same chemical element
Official title: Separation of different isotopes of the same chemical element (preventing occurrence of critical conditions when producing fissile material G21; shielding from radioactivity G21F)
B01D59/00 (Separation of different isotopes of the same chemical element) appears on 806 US grants and 353 published applications in this corpus.
Search patents in B01D- Granted patents
- 806
- Published applications
- 353
- Assignees
- 385
- Inventors
- 1,401
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 41 | 0 |
| 1977 | 44 | 0 |
| 1978 | 50 | 0 |
| 1979 | 32 | 0 |
| 1980 | 38 | 0 |
| 1981 | 42 | 0 |
| 1982 | 28 | 0 |
| 1983 | 20 | 0 |
| 1984 | 18 | 0 |
| 1985 | 23 | 0 |
| 1986 | 15 | 0 |
| 1987 | 15 | 0 |
| 1988 | 24 | 0 |
| 1989 | 11 | 0 |
| 1990 | 9 | 0 |
| 1991 | 19 | 0 |
| 1992 | 21 | 0 |
| 1993 | 14 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 12 | 2 |
| 2002 | 8 | 7 |
| 2003 | 7 | 6 |
| 2004 | 15 | 6 |
| 2005 | 4 | 22 |
| 2006 | 4 | 10 |
| 2007 | 12 | 9 |
| 2008 | 16 | 13 |
| 2009 | 4 | 19 |
| 2010 | 8 | 16 |
| 2011 | 12 | 17 |
| 2012 | 10 | 11 |
| 2013 | 17 | 20 |
| 2014 | 17 | 14 |
| 2015 | 11 | 12 |
| 2016 | 11 | 11 |
| 2017 | 7 | 9 |
| 2018 | 11 | 18 |
| 2019 | 13 | 11 |
| 2020 | 13 | 20 |
| 2021 | 13 | 14 |
| 2022 | 17 | 20 |
| 2023 | 13 | 17 |
| 2024 | 11 | 20 |
| 2025 | 13 | 20 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 59/34Separation by photochemical methods252
- B01D 59/44Separation by mass spectrography181
- B01D 59/10Separation by diffusion109
- B01D 59/28Separation by chemical exchange109
- B01D 59/50Separation involving two or more processes covered by different groups selected from69
- B01D 59/22Separation by extracting61
- B01D 59/02Separation by phase transition55
- B01D 59/20Separation by centrifuging46
All 10 subgroupsShow fewer
Recent patents
- Method of producing and refining carrier-free lutetium-177 using chromatography11 Aug 2026US 12,703,897 B2Korea Atomic Energy Research Institute
- Lithium isotope concentration device, multi-stage lithium isotope concentration device, and lithium isotope concentration method5 May 2026US 12,616,936 B2Hirosaki University
- Systems, apparatus and methods for separating actinium, radium, and thorium28 Apr 2026US 12,614,645 B2The University of British Columbia
- Purification system for nitrogen gas and xenon gas in water and isotope static analysis method thereof3 Mar 2026US 12,566,154 B2Institute of Geology and Geophysics, Chinese Academy of Sciences
- Method for the removal of radionuclides from aqueous radioactive waste17 Feb 2026US 12,555,697 B2Dept of Atomic Energy Government of India
- Systems and methods for highly efficient isotope enrichment by liquid solution centrifugation1 Oct 2026US 2026/0295532 A1The Trustees of Columbia University in the City of New York
- Method and composition for liquid-liquid extraction17 Sep 2026US 2026/0275450 A1Molten Salt Solutions, LLC
- Systems and methods for separating lithium isotopes from lithium30 Jul 2026US 2026/0216652 A1Pure Lithium Corporation
- Distillation device and distillation method11 Jun 2026US 2026/0158411 A1Taiyo Nippon Sanso Corporation
- Separation column with variable geometry11 Jun 2026US 2026/0158417 A1Eczacibasi Monrol Nukleer Urunler Sanayi Ve Ticaret Anonim Sirketi
Most cited
By later US patents
- Miniaturized mass spectrometer system529US 5,313,061 AViking Instrument · 1994
- Process and apparatus for changing the energy of charged particles contained in a gaseous medium166US 4,542,293 AYale University · 1985
- Instrument and method for the laser desorption of ions in mass spectrometry161US 5,045,694 AThe Rockefeller University · 1991
- Method and apparatus for the mass spectrometric analysis of solutions133US 4,531,056 AYale University · 1985
- Packing element for an exchange column128US 4,296,050 ASulzer Brothers Limited · 1981