B01D 2257/11
Noble gases
B01D2257/11 (Noble gases) appears on 250 US grants and 290 published applications in this corpus.
Search patents in B01D- Granted patents
- 250
- Published applications
- 290
- Assignees
- 163
- Inventors
- 819
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 3 |
| 2003 | 8 | 5 |
| 2004 | 3 | 3 |
| 2005 | 3 | 11 |
| 2006 | 3 | 4 |
| 2007 | 5 | 5 |
| 2008 | 3 | 4 |
| 2009 | 3 | 11 |
| 2010 | 7 | 6 |
| 2011 | 0 | 6 |
| 2012 | 5 | 13 |
| 2013 | 12 | 13 |
| 2014 | 14 | 12 |
| 2015 | 8 | 12 |
| 2016 | 12 | 21 |
| 2017 | 17 | 16 |
| 2018 | 11 | 20 |
| 2019 | 11 | 17 |
| 2020 | 20 | 13 |
| 2021 | 4 | 13 |
| 2022 | 8 | 17 |
| 2023 | 11 | 22 |
| 2024 | 14 | 13 |
| 2025 | 13 | 17 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Analysis device and analysis method for quality index of natural gas product and application6 Oct 2026US 12,754,171 B2PetroChina Company Limited
- Analysis system and method for impurity components in perfluoropropane22 Sep 2026US 12,742,752 B2Lansis Instrument (Shanghai) Co., Ltd
- GIS-type zeolite formed body, adsorption apparatus, separation method, and GIS-type zeolite16 Jun 2026US 12,654,149 B2Asahi Kasei Kabushiki Kaisha
- System to collect, recover and recycle chemical exhaust from semiconductor processing chambers26 May 2026US 12,636,592 B2APPLIED Materials.Inc.
- Hydrogen purification by adsorption10 Mar 2026US 12,570,528 B2Air Products and Chemicals, Inc.
- System to collect, recover and recycle chemical exhaust from semiconductor processing chambers27 Aug 2026US 2026/0249209 A1APPLIED Materials.Inc.
- Mixed gas separation device and mixed gas separation method27 Aug 2026US 2026/0250130 A1L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitaion des Procédés Georges Claude
- High capacity production of carbon molecular sieve membranes6 Aug 2026US 2026/0225033 A1
- Analysis system and method for impurity components in perfluoropropane23 Jul 2026US 2026/0210916 A1Lansis Instrument (Shanghai) Co., Ltd
- Multi-stage hydrogen/helium separation using hydrogen-selective membranes11 Jun 2026US 2026/0158436 A1Hydrogen Onsite, S.L.
Most cited
By later US patents
- Nitrogen adsorption with a Ca and/or Sr exchanged lithium X-zeolite87US 5,152,813 AAir Products and Chemicals, Inc. · 1992
- Performance stability in shallow beds in pressure swing adsorption systems73US 7,717,981 B2Air Products and Chemicals, Inc. · 2010
- Energy recovery72US 4,733,528 AImperial Chemical Industries PLC · 1988
- Molecular sieve oxygen concentrator with secondary oxygen purifier71US 4,880,443 AThe United States of America as represented by the Secretary of the Air Force · 1989
- Method and apparatus for removing residual hydrogen from a purified gas70US 5,238,469 ASAES Pure Gas, Inc. · 1993