B81B 2201/10
Microfilters
Official title: Microfilters, e.g. for gas or fluids
B81B2201/10 (Microfilters) appears on 41 US grants and 43 published applications in this corpus.
Search patents in B81B- Granted patents
- 41
- Published applications
- 43
- Assignees
- 34
- Inventors
- 120
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 5 |
| 2019 | 5 | 2 |
| 2020 | 1 | 4 |
| 2021 | 2 | 5 |
| 2022 | 6 | 5 |
| 2023 | 1 | 1 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Micro-electro-mechanical system fluid control20 May 2025US 12,304,804 B2Water Stuff & Sun GmbH
- Method for producing a plurality of sensor devices, and sensor device14 Jan 2025US 12,195,330 B2Robert Bosch GmbH
- Semiconductor device and method for manufacturing a semiconductor device5 Nov 2024US 12,134,556 B2STMicroelectronics International N. V.
- MEMS type semiconductor gas detection element7 May 2024US 11,977,043 B2New Cosmos Electric Co., Ltd.
- Inductive acoustic filters for acoustic devices13 Feb 2024US 11,902,727 B2Apple Inc.
- Waterproof member and waterproof case30 Jul 2026US 2026/0216629 A1Nitto Denko Corporation
- Membrane for a vibrating mesh module9 Jul 2026US 2026/0192060 A1Philip Morris Products S. A.
- Production method for a micromechanical sensor component and corresponding micromechanical sensor component3 Apr 2025US 2025/0109016 A1
- Micro-electro-mechanical system fluid control22 Aug 2024US 2024/0279048 A1Water Stuff & Sun GmbH
- Micromechanical environmental barrier device6 Jun 2024US 2024/0182297 A1Infineon Technologies AG
Most cited
By later US patents
- Microfabricated filter with specially constructed channel walls, and containment well and capsule constructed with such filters171US 5,798,042 AThe Regents of the University of California · 1998
- Method of making a product with a micro or nano sized structure and product158US 7,531,120 B2Aquamarijn Holding B.V. · 2009
- Micromachined capsules having porous membranes and bulk supports115US 5,770,076 AThe Regents of the University of California · 1998
- Micromachined porous membranes with bulk support108US 5,985,328 AThe Regents of the University of California · 1999
- Microfabricated filter with specially constructed channel walls, and containment well and capsule constructed with such filters76US 6,044,981 AThe Regents of the University of California · 2000