B01D 71/028
Molecular sieves
Official title: {Molecular sieves (carbon B01D71/021)}
B01D71/028 (Molecular sieves) appears on 508 US grants and 680 published applications in this corpus.
Search patents in B01D- Granted patents
- 508
- Published applications
- 680
- Assignees
- 308
- Inventors
- 1,431
- 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 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 3 |
| 2002 | 12 | 4 |
| 2003 | 11 | 9 |
| 2004 | 6 | 16 |
| 2005 | 6 | 15 |
| 2006 | 10 | 15 |
| 2007 | 9 | 18 |
| 2008 | 11 | 18 |
| 2009 | 9 | 39 |
| 2010 | 11 | 22 |
| 2011 | 14 | 22 |
| 2012 | 22 | 27 |
| 2013 | 14 | 16 |
| 2014 | 18 | 21 |
| 2015 | 14 | 31 |
| 2016 | 14 | 30 |
| 2017 | 17 | 34 |
| 2018 | 22 | 37 |
| 2019 | 30 | 34 |
| 2020 | 31 | 44 |
| 2021 | 44 | 42 |
| 2022 | 27 | 39 |
| 2023 | 32 | 42 |
| 2024 | 30 | 39 |
| 2025 | 23 | 34 |
| 2026 | 14 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mixed gas separation method and mixed gas separation apparatus22 Sep 2026US 12,741,246 B2NGK Insulators, Ltd.
- Method and system for reducing volume of raw material liquid15 Sep 2026US 12,734,485 B2Asahi Kasei Kabushiki Kaisha
- 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
- 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
- Method of Producing Hydrogen From Water Using Renewable Energy10 Sep 2026US 2026/0265927 A1LSG Partners, LLC
- Purification process of ethyl formate27 Aug 2026US 2026/0249251 A1Taicang Hushi Reagent Co., Ltd.
- Mixed-matrix metal-organic framework membranes for molecular separations27 Aug 2026US 2026/0249253 A1King Abdullah University of Science and Technology
- Organic solvent regenerator, substrate processing system, and method of regenerating organic solvent27 Aug 2026US 2026/0250222 A1SCREEN Holdings Co., Ltd.
Most cited
By later US patents
- Hydrogen recovery by adsorbent membranes127US 5,354,547 AAir Products and Chemicals, Inc. · 1994
- Mixed matrix membranes incorporating microporous polymers as fillers98US 7,410,525 B1Uop LLC · 2008
- 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