B01D 2273/26
Making use of optical waves
Official title: Making use of optical waves, e.g. for measurements
B01D2273/26 (Making use of optical waves) appears on 25 US grants and 26 published applications in this corpus.
Search patents in B01D- Granted patents
- 25
- Published applications
- 26
- Assignees
- 22
- Inventors
- 77
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 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 | 1 | 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 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 3 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 2 |
| 2020 | 6 | 4 |
| 2021 | 2 | 1 |
| 2022 | 2 | 6 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filters, filter systems, and methods of use30 Sep 2025US 12,427,465 B2University of Florida Research Foundation, Inc.
- Clogged air filter detection for galley inserts19 Aug 2025US 12,390,755 B2B/E Aerospace, Inc.
- Air purification device6 Jun 2023US 11,666,845 B2Respired Limited
- Systems, apparatus and methods for purifying air16 May 2023US 11,648,331 B2
- Air purification and disinfection apparatus and methods of use29 Nov 2022US 11,511,013 B2
- Filter monitoring apparatus for filter cleaning28 May 2026US 2026/0146937 A1
- Filters, filter systems, and methods of use4 May 2023US 2023/0140619 A1University of Florida Research Foundation, Inc.
- Clogged air filter detection for galley inserts20 Oct 2022US 2022/0331729 A1B/E Aerospace, Inc.
- System and method for the identification and separation of compounds carried in a fluid stream15 Sep 2022US 2022/0288523 A1
- Air purifying device25 Aug 2022US 2022/0265888 A1LENS Therapies, LLC
Most cited
By later US patents
- Clogged filter detector41US 7,012,685 B12006
- Air cleaning device13US 9,757,674 B2Samsung Electronics Co., Ltd. · 2017
- Fluid cleaning filter and filter device12US 7,247,237 B2Bridgestone Corporation · 2007
- Honeycomb filter defect detecting method and apparatus12US 7,674,309 B2Corning Incorporated · 2010
- Method and apparatus for detecting leaks in filter bags of a baghouse11US 4,304,492 AStandard Havens, Inc. · 1981