B81B 2203/0127
Diaphragms, i.e. structures separating two media that can control the passage from
Official title: Diaphragms, i.e. structures separating two media that can control the passage from one medium to another; Membranes, i.e. diaphragms with filtering function
B81B2203/0127 (Diaphragms, i.e. structures separating two media that can control the passage from) appears on 1,194 US grants and 1,488 published applications in this corpus.
Search patents in B81B- Granted patents
- 1,194
- Published applications
- 1,488
- Assignees
- 399
- Inventors
- 2,135
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1986 | 1 | 0 |
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| 2001 | 8 | 6 |
| 2002 | 6 | 12 |
| 2003 | 19 | 15 |
| 2004 | 13 | 18 |
| 2005 | 9 | 24 |
| 2006 | 13 | 20 |
| 2007 | 16 | 22 |
| 2008 | 9 | 5 |
| 2009 | 14 | 22 |
| 2010 | 13 | 22 |
| 2011 | 10 | 20 |
| 2012 | 16 | 23 |
| 2013 | 27 | 30 |
| 2014 | 36 | 43 |
| 2015 | 47 | 73 |
| 2016 | 52 | 81 |
| 2017 | 71 | 111 |
| 2018 | 83 | 111 |
| 2019 | 101 | 112 |
| 2020 | 112 | 126 |
| 2021 | 84 | 110 |
| 2022 | 85 | 101 |
| 2023 | 90 | 123 |
| 2024 | 95 | 96 |
| 2025 | 83 | 100 |
| 2026 | 62 | 62 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- MEMS structure including a buried cavity with antistiction protuberances, and manufacturing methods thereof6 Oct 2026US 12,753,067 B2STMicroelectronics S,r.l.
- Engineered substrates, free-standing semiconductor microstructures, and related systems and methods6 Oct 2026US 12,753,068 B2Lawrence Semiconductor Research Laboratory, Inc.
- Differential drive of a sound transducer system15 Sep 2026US 12,735,314 B2Robert Bosch GmbH
- MEMS device with integrated CMOS circuit8 Sep 2026US 12,729,111 B23C Project Management Limited
- Micro-electro-mechanical system device1 Sep 2026US 12,722,968 B2Vanguard International Semiconductor Corporation
- Packaging method for mems acoustic device structure, mems acoustic device packaging structure and mems chip packaging method for acoustic device8 Oct 2026US 2026/0307982 A1Hefei Smat Technology Co., Ltd.
- Mems device1 Oct 2026US 2026/0296877 A1Infineon Technologies AG
- Mems varactor with contact-mode operation24 Sep 2026US 2026/0287445 A1Semtech Corporation
- Failsafe ohmic-capacitive membrane actuator-based radio frequency switch24 Sep 2026US 2026/0290713 A1Dell Products L. P.
- Semiconductor device17 Sep 2026US 2026/0274648 A1Infineon Technologies AG
Most cited
By later US patents
- Lithography device for semiconductor circuit pattern generator287US 7,242,012 B2Elm Technology Corporation · 2007
- Miniature silicon condenser microphone268US 5,870,482 AKnowles Electronics, LLC · 1999
- Boron nutride membrane in wafer structure239US 5,270,125 ARedwood Microsystems, Inc. · 1993
- Micropump with valve structure206US 5,259,737 ASeiko Epson Corporation · 1993
- Miniature broadband acoustic transducer172US 6,535,460 B2Knowles Electronics, LLC · 2003