B01D 71/70
Polymers having silicon in the main chain, with or without sulfur, nitrogen
Official title: Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
B01D71/70 (Polymers having silicon in the main chain, with or without sulfur, nitrogen) appears on 348 US grants and 478 published applications in this corpus.
Search patents in B01D- Granted patents
- 348
- Published applications
- 478
- Assignees
- 286
- Inventors
- 1,247
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 2 |
| 2003 | 3 | 10 |
| 2004 | 2 | 4 |
| 2005 | 6 | 6 |
| 2006 | 1 | 5 |
| 2007 | 5 | 9 |
| 2008 | 5 | 7 |
| 2009 | 3 | 6 |
| 2010 | 7 | 10 |
| 2011 | 2 | 13 |
| 2012 | 3 | 19 |
| 2013 | 13 | 19 |
| 2014 | 12 | 23 |
| 2015 | 10 | 27 |
| 2016 | 17 | 35 |
| 2017 | 17 | 24 |
| 2018 | 26 | 26 |
| 2019 | 27 | 31 |
| 2020 | 19 | 24 |
| 2021 | 22 | 29 |
| 2022 | 12 | 23 |
| 2023 | 22 | 24 |
| 2024 | 19 | 36 |
| 2025 | 19 | 35 |
| 2026 | 19 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gas separation membrane8 Sep 2026US 12,728,393 B2Seiko Epson Corporation
- Method for the separation of phosphorus pentafluoride from hydrogen chloride11 Aug 2026US 12,702,948 B2Mexichem Fluor S.A. De C.V.
- Organosilica membranes, methods of making same, and uses thereof11 Aug 2026US 12,702,957 B2The Research Foundation for The State University of New York
- Air filtration system and set of profiles and accessories for sealing and creation of a sealed or partially sealed environment with controlled airflow4 Aug 2026US 12,697,574 B2
- Fluid separation membranes and use thereof7 Jul 2026US 12,673,298 B1Semicom Dwc-LLC
- Separation membrane and method for producing same17 Sep 2026US 2026/0273476 A1Hiroshima University
- Polysilsesquioxane/polyetheretherketone composite membranes and methods for preparing the same27 Aug 2026US 2026/0249250 A1Changzhou University
- Fluorine-free hydrophobic permeable material27 Aug 2026US 2026/0250478 A1Donaldson Company, Inc.
- Ceramic cation exchange materials13 Aug 2026US 2026/0233171 A1Membrion, Inc.
- Polymeric Hollow Fiber Membrane Having A Crosslinked Selective Layer, Carbon Molecular Sieve Hollow Fiber Membrane, And Methods For Preparing The Same30 Jul 2026US 2026/0216661 A1Sogang University Research & Business Development Foundation
Most cited
By later US patents
- Process for the manufacture of an ophthalmic molding244US 6,039,913 ANovartis AG · 2000
- Semipermeable thin-film membranes comprising siloxane, alkoxysilyl and aryloxysilyl oligomers and copolymers146US 4,781,733 ABend Research, Inc. · 1988
- Ultrathin film, process for production thereof, and use thereof for concentrating a specified gas in a gaseous mixture121US 4,493,714 ATeijin Limited · 1985
- Composite membrane of a hydrophilic asymmetric membrane coated with an organosiloxane block copolymer114US 5,296,144 AWorld Trade Corporation · 1994
- Hydratable siloxane comprising porous polymers100US 6,663,668 B1Novartis AG · 2003