G01H 15/00
Measuring mechanical or acoustic impedance
G01H15/00 (Measuring mechanical or acoustic impedance) appears on 102 US grants and 57 published applications in this corpus.
Search patents in G01H- Granted patents
- 102
- Published applications
- 57
- Assignees
- 77
- Inventors
- 200
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 4 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 2 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 2 | 4 |
| 2017 | 1 | 2 |
| 2018 | 8 | 6 |
| 2019 | 5 | 4 |
| 2020 | 1 | 5 |
| 2021 | 4 | 1 |
| 2022 | 5 | 6 |
| 2023 | 6 | 3 |
| 2024 | 5 | 4 |
| 2025 | 3 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Diagnostic sensing structure for drone's drive system and block-type diagnostic device for drone's drive system including same3 Feb 2026US 12,540,879 B2Weflo Inc.
- Apparatus and method for sound anomaly detection based on non-compression convolutional neural network27 Jan 2026US 12,535,354 B2SK Planet Co., Ltd.
- Systems and techniques for deicing sensors25 Nov 2025US 12,481,043 B2GM Cruise Holdings LLC
- Self-calibrated method of determining borehole fluid acoustic properties15 Jul 2025US 12,359,564 B2Baker Hughes Oilfield Operations LLC
- Equipment malfunction diagnosis apparatus using sound spectrogram image, and method therefor15 Apr 2025US 12,276,566 B2Wi.Plat Co., Ltd.
- Electronic apparatus and terminal apparatus for calibrating noise and/or vibration and controlling methods thereof20 Aug 2026US 2026/0243502 A1Samsung Electronics Co., Ltd.
- Interactive system and method for predicting acoustic properties of a wall6 Aug 2026US 2026/0227233 A1United States Gypsum Company
- Resonator-Boosted Micromachined Ultrasonic Transducers4 Jun 2026US 2026/0151795 A1Northeastern University
- Audio head, sensor head, device and method of analysing property of target using same5 Jun 2025US 2025/0176930 A1Sonai Health Oy
- Self-calibrated method of determining borehole fluid acoustic properties16 Jan 2025US 2025/0020058 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Ultrasonic system for measuring fluid impedance or liquid level183US 4,320,659 APanametrics, Inc. · 1982
- Ultrasonic measurement apparatus115US 5,130,950 ASchlumberger Technology Corporation · 1992
- Soil compaction measurement107US 6,604,432 B1BBN Corporation · 2003
- Device and process for generating and measuring the shape of an acoustic reflectance curve of an ear100US 5,868,682 AMDI Instruments, Inc. · 1999
- Device and process for generating and measuring the shape of an acoustic reflectance curve of an ear99US 5,699,809 AMDI Instruments, Inc. · 1997