B01D 69/04
Tubular membranes
B01D69/04 (Tubular membranes) appears on 276 US grants and 379 published applications in this corpus.
Search patents in B01D- Granted patents
- 276
- Published applications
- 379
- Assignees
- 278
- Inventors
- 939
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 5 |
| 2004 | 1 | 2 |
| 2005 | 1 | 6 |
| 2006 | 2 | 11 |
| 2007 | 3 | 5 |
| 2008 | 3 | 12 |
| 2009 | 6 | 8 |
| 2010 | 4 | 12 |
| 2011 | 8 | 14 |
| 2012 | 5 | 6 |
| 2013 | 13 | 11 |
| 2014 | 6 | 12 |
| 2015 | 9 | 22 |
| 2016 | 7 | 19 |
| 2017 | 13 | 26 |
| 2018 | 14 | 22 |
| 2019 | 18 | 31 |
| 2020 | 17 | 20 |
| 2021 | 18 | 21 |
| 2022 | 15 | 27 |
| 2023 | 16 | 27 |
| 2024 | 17 | 23 |
| 2025 | 16 | 15 |
| 2026 | 12 | 21 |
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.
- Preparation method of milk oligosaccharides and oligosaccharide powder and food prepared thereby15 Sep 2026US 12,735,512 B2Beijing Sanyuan Foods Co., Ltd.
- Formed sheet membrane element and filtration system4 Aug 2026US 12,697,586 B2Fibracast Ltd.
- Degassing apparatus19 May 2026US 12,629,637 B2DIC Corporation
- Filter structure and substrate treating system including filter structure12 May 2026US 12,628,601 B2Samsung Electronics Co., Ltd.
- Polyether Sulfone Copolymers and Articles Prepared Therefrom8 Oct 2026US 2026/0308326 A1Thermo Fisher Bioprocessing Inc.
- Hydrophilic nanofiltration/ultrafiltration membrane as a co2 absorber for air capture10 Sep 2026US 2026/0264017 A1University of Kentucky Research Foundation
- Amanita Muscaria Mushroom Extracts and Products, and Improved Processes for Producing Extracts of Amanita Muscaria Mushrooms at Kilogram Scale3 Sep 2026US 2026/0256858 A1Psyched Wellness Ltd.
- Method and device for regenerating inorganic porous gas separation membrane13 Aug 2026US 2026/0233167 A1Jgc Corporation
- Dental unit waterline system, kit and method of use6 Aug 2026US 2026/0224342 A1Parkell, Inc.
Most cited
By later US patents
- Closed hemapheresis system and method178US 4,776,964 A1988
- Closed hemapheresis system and method158US 4,911,833 A1990
- Hydrogen recovery by adsorbent membranes127US 5,354,547 AAir Products and Chemicals, Inc. · 1994
- Dialyzing membrane with adsorbent layer122US 4,267,047 AAkzo N.V. of Arnhem/Nederland · 1981
- Filtration membrane with calcined .alpha.-alumina particles therein113US 5,914,039 AZenon Environmental Inc. · 1999