B01D 69/046
Characterised by the cross-sectional shape of the tube
Official title: {characterised by the cross-sectional shape of the tube}
B01D69/046 (Characterised by the cross-sectional shape of the tube) appears on 25 US grants and 41 published applications in this corpus.
Search patents in B01D- Granted patents
- 25
- Published applications
- 41
- Assignees
- 22
- Inventors
- 73
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 4 | 4 |
| 2014 | 2 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 3 |
| 2018 | 1 | 4 |
| 2019 | 2 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 3 |
| 2022 | 2 | 5 |
| 2023 | 3 | 1 |
| 2024 | 0 | 2 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for concentrating gas30 Sep 2025US 12,427,474 B2Ventec Life Systems, Inc.
- Method of manufacturing a single-piece column structure for the separation of a fluid medium12 Aug 2025US 12,383,868 B2Technologies Avancees Et Membranes Industrielles
- Systems and methods for concentrating gas18 Feb 2025US 12,226,733 B2Ventec Life Systems, Inc.
- Porous sintered membranes and methods of preparing porous sintered membranes12 Sep 2023US 11,752,471 B2Entegris, Inc.
- Method for manufacturing zeolite membrane structure24 Jan 2023US 11,559,771 B2NGK Insulators, Ltd.
- Annular membrane assembly for selective carbon capture30 Jul 2026US 2026/0216664 A1Valero Services, Inc.
- System and Method for Concentrating Gas30 Apr 2026US 2026/0115652 A1Ventec Life Systems, Inc.
- System and Method for Concentrating Gas5 Jun 2025US 2025/0177913 A1Ventec Life Systems, Inc.
- Tangential Filtration Elements and Filtration Devices and Methods Of Use12 Sep 2024US 2024/0299885 A1
- Water purifier filter cartridge of simple structure4 Jul 2024US 2024/0216870 A1Bluevua Inc.
Most cited
By later US patents
- Water treatment system48US 7,473,362 B12009
- Gas-exchange sheet members40US 4,342,723 AShin-Etsu Polymer Co., Ltd. · 1982
- Membranes with preselected pore types for separation processes17US 4,261,832 ABergwerksverband GmbH · 1981
- Drying substances, preparation and use thereof5US 8,764,888 B2Oridion Medical 1987 Ltd. · 2014
- Drying substances, preparation and use thereof4US 8,366,811 B2Oridion Medical 1987 Ltd. · 2013