B01D 2325/43
Specific optical properties
B01D2325/43 (Specific optical properties) appears on 33 US grants and 50 published applications in this corpus.
Search patents in B01D- Granted patents
- 33
- Published applications
- 50
- Assignees
- 49
- Inventors
- 132
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 3 | 4 |
| 2018 | 1 | 1 |
| 2019 | 3 | 3 |
| 2020 | 1 | 5 |
| 2021 | 2 | 6 |
| 2022 | 4 | 0 |
| 2023 | 1 | 4 |
| 2024 | 3 | 8 |
| 2025 | 2 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transparent reusable ultrahigh molecular weight polyethylene air filter24 Feb 2026US 12,558,655 B2The Hong Kong University of Science and Technology
- Liquid composition, membrane, and product comprising membrane3 Feb 2026US 12,539,496 B2Somar Corporation
- Method for preparing porous polymer film having controlled pore depth, and porous polymer film prepared thereby20 Jan 2026US 12,528,102 B2Industry-University Cooperation Foundation Hanyang University
- Composite semipermeable membrane7 Oct 2025US 12,434,202 B2Toray Industries, Inc.
- Semipermeable membrane for water treatment, preparing method for the same, and polluted water treatment system including the same24 Jun 2025US 12,337,285 B2Research & Business Foundation Sungkyunkwan University
- Light- and oxygen-permeable membrane and preparation method and use thereof24 Jul 2025US 2025/0235828 A1Cangzhou Institute of Tiangong University
- Dry-process membrane for filtration28 Nov 2024US 2024/0390855 A1Celgard, LLC
- Electrospun polymeric nanofiber filter material and devices22 Aug 2024US 2024/0278172 A1Liquidity Corporation
- Dry-process membrane for filtration11 Jul 2024US 2024/0226814 A1Celgard, LLC
- Transparent, gas-permeable and waterproof film, particularly for applications in the medical field2 May 2024US 2024/0139690 A1Adhex Technologies
Most cited
By later US patents
- Porous PTFE materials and articles produced therefrom267US 7,306,729 B2Gore Enterprise Holdings, Inc. · 2007
- Method for making transparent continuous zeolite film and structure of the zeolite film30US 7,253,130 B2National Central University · 2007
- Method of transferring nanoparticles using a microporous article having metallic nanoparticle coating27US 8,062,701 B23M Innovative Properties Company · 2011
- Transparent micro perforated material and preparation process13US 6,120,875 ACyclopore S.A. · 2000
- Triaxially oriented polymer membrane12US 5,411,805 AUniversity of Pittsburgh—Of the Commonwealth System of Higher Education · 1995