B01D 71/0281
Zeolites
Official title: {Zeolites}
B01D71/0281 (Zeolites) appears on 445 US grants and 567 published applications in this corpus.
Search patents in B01D- Granted patents
- 445
- Published applications
- 567
- Assignees
- 255
- Inventors
- 1,187
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 3 |
| 2002 | 12 | 4 |
| 2003 | 11 | 9 |
| 2004 | 6 | 16 |
| 2005 | 6 | 15 |
| 2006 | 8 | 12 |
| 2007 | 8 | 17 |
| 2008 | 9 | 18 |
| 2009 | 9 | 32 |
| 2010 | 10 | 18 |
| 2011 | 11 | 19 |
| 2012 | 18 | 21 |
| 2013 | 11 | 13 |
| 2014 | 14 | 19 |
| 2015 | 13 | 27 |
| 2016 | 14 | 26 |
| 2017 | 16 | 32 |
| 2018 | 17 | 27 |
| 2019 | 28 | 31 |
| 2020 | 29 | 41 |
| 2021 | 40 | 42 |
| 2022 | 25 | 30 |
| 2023 | 29 | 29 |
| 2024 | 24 | 25 |
| 2025 | 14 | 21 |
| 2026 | 9 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mixed gas separation method and mixed gas separation apparatus22 Sep 2026US 12,741,246 B2NGK Insulators, Ltd.
- Zeolite membrane complex, method of producing zeolite membrane complex, separator, membrane reactor, and separation method8 Sep 2026US 12,728,392 B2NGK Insulators, Ltd.
- Palladium-based membrane25 Aug 2026US 12,715,767 B2National University of Singapore
- NaA zeolite membrane for recovery of ammonia28 Jul 2026US 12,691,423 B2Rensselaer Polytechnic Institute
- Porous medium with adjustable fluid permeability and associated systems and methods14 Jul 2026US 12,678,743 B2Massachusetts Institute of Technology
- Process for the degradation of per- and polyfluorinated substances (pfas) using catalytic ozonolysis17 Sep 2026US 2026/0274720 A1The Board of Trustees of The University of Alabama
- Organic solvent regenerator, substrate processing system, and method of regenerating organic solvent27 Aug 2026US 2026/0250222 A1SCREEN Holdings Co., Ltd.
- Method and device for regenerating inorganic porous gas separation membrane13 Aug 2026US 2026/0233167 A1Jgc Corporation
- Zeolite-like molecular sieve membrane for removing fluorine and chlorine from waste acid and preparation method thereof16 Jul 2026US 2026/0199843 A1Kunming Metallurgical Research Institute Co., Ltd.
- Synthesis of Zeolite Nanosheets from Mining Waste4 Jun 2026US 2026/0152404 A1
Most cited
By later US patents
- Hydrogen recovery by adsorbent membranes127US 5,354,547 AAir Products and Chemicals, Inc. · 1994
- Small crystallite zeolite CHA97US 6,709,644 B2Chevron U.S.A.Inc. · 2004
- Separation of methane from higher carbon number hydrocarbons utilizing zeolitic imidazolate framework materials97US 8,192,709 B2ExxonMobil Research and Engineering Company · 2012
- Modification of zeolite or molecular sieve membranes using atomic layer controlled chemical vapor deposition94US 6,043,177 AUniversity Technology Corporation · 2000
- Gas separation by adsorbent membranes83US 5,104,425 AAir Products and Chemicals, Inc. · 1992