B01D 67/00135
Air gap characteristics
Official title: {Air gap characteristics}
B01D67/00135 (Air gap characteristics) appears on 51 US grants and 61 published applications in this corpus.
Search patents in B01D- Granted patents
- 51
- Published applications
- 61
- Assignees
- 45
- Inventors
- 141
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 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 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 3 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 5 |
| 2011 | 4 | 0 |
| 2012 | 5 | 0 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 3 |
| 2016 | 2 | 3 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 11 |
| 2020 | 7 | 4 |
| 2021 | 7 | 5 |
| 2022 | 3 | 3 |
| 2023 | 2 | 0 |
| 2024 | 3 | 4 |
| 2025 | 2 | 4 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid separation membranes and use thereof7 Jul 2026US 12,673,298 B1Semicom Dwc-LLC
- Flat sheet membrane with integral posts5 May 2026US 12,616,942 B2Thetis Environmental Inc.
- Microporous material and systems and methods for making the same24 Jun 2025US 12,338,338 B2
- Polybenzimidazole films18 Feb 2025US 12,227,627 B2University of South Carolina
- Porous hollow fiber membrane24 Dec 2024US 12,172,135 B2DAICEN MEMBRANE-SYSTEMS Ltd.
- Hydrophobic and Porous Sorbent Polymer Composites and Methods for CO2 Capture23 Oct 2025US 2025/0325962 A1Battelle Memorial Institute
- Lined hollow fiber membrane with sandwich structure, and preparation method and use thereof28 Aug 2025US 2025/0269333 A1
- Method for the production of a membrane envelope15 May 2025US 2025/0153110 A1
- Microporous material and systems and methods for making the same13 Feb 2025US 2025/0051535 A1
- Forward Osmosis Membrane and Forward Osmosis Membrane Module Including Same15 Aug 2024US 2024/0269618 A1Asahi Kasei Kabushiki Kaisha
Most cited
By later US patents
- Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters156US 6,045,899 AUSF Filtration and Separations Group, Inc. · 2000
- Highly asymmetric, hydrophilic, microfiltration membranes having large pore diameters45US 7,125,493 B2Pall Corporation · 2006
- Highly asymmetric, hydrophilic, microfiltration membranes having large pore diameters42US 6,565,782 B1Pall Corporation · 2003
- Highly asymmetric, hydrophilic, microfiltration membranes having large pore diameters42US 6,939,468 B2Pall Corporation · 2005
- Process of forming multilayered structures31US 7,743,929 B2Millipore Corporation · 2010