G08C 23/02
Non-electrical signal transmission systems: using infrasonic, sonic or ultrasonic waves
Official title: using infrasonic, sonic or ultrasonic waves
G08C23/02 (Non-electrical signal transmission systems: using infrasonic, sonic or ultrasonic waves) appears on 192 US grants and 235 published applications in this corpus.
Search patents in G08C- Granted patents
- 192
- Published applications
- 235
- Assignees
- 179
- Inventors
- 514
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 8 |
| 2004 | 4 | 1 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 4 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 4 |
| 2011 | 1 | 5 |
| 2012 | 5 | 5 |
| 2013 | 1 | 12 |
| 2014 | 4 | 16 |
| 2015 | 7 | 27 |
| 2016 | 19 | 26 |
| 2017 | 22 | 24 |
| 2018 | 21 | 23 |
| 2019 | 12 | 13 |
| 2020 | 14 | 15 |
| 2021 | 16 | 15 |
| 2022 | 10 | 7 |
| 2023 | 5 | 6 |
| 2024 | 7 | 5 |
| 2025 | 3 | 8 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light system control method, light system, and vehicle17 Mar 2026US 12,576,781 B2Shenzhen Yinwang Intelligent Technologies Co., Ltd.
- Fire on demand barrier valve using wireless signal transmission and spring-forced piston17 Feb 2026US 12,553,310 B2Halliburton Energy Services.Inc.
- Fire on demand atmospheric barrier valve using wireless signal transmission27 Jan 2026US 12,534,976 B2Halliburton Energy Services.Inc.
- Headphone and headphone state detection method30 Sep 2025US 12,432,481 B2Lanto Electronic Limited
- System and method for activating a voice assistant for a vehicle29 Jul 2025US 12,373,163 B2GM Global Technology Operations LLC
- Pulsed magnetic field telemetry to communicate with a downhole inflow valve20 Aug 2026US 2026/0243162 A1Halliburton Energy Services.Inc.
- Electric machine for a motor vehicle, comprising a piezoelectric bearing module28 May 2026US 2026/0149335 A1Continental Automotive Technologies GmbH
- Piezoelectric measuring device for motor vehicle28 May 2026US 2026/0149337 A1Continental Automotive Technologies GmbH
- Piezoelectric measuring device by pwm for a motor vehicle28 May 2026US 2026/0149340 A1AUMOVIO Germany GmbH
- Concepts and methods for underwater communication with equipment such as automatic swimming pool cleaners21 Aug 2025US 2025/0263948 A1Zodiac Pool Systems LLC
Most cited
By later US patents
- Remote control signaling using audio watermarks171US 6,737,957 B1Verance Corporation · 2004
- Ultrasonic data communication system124US 5,982,297 AThe Aerospace Corporation · 1999
- Method and apparatus for activating switches in response to different acoustic signals118US 5,493,618 AJoseph Enterprises · 1996
- Method and apparatus for communicating data in a wellbore and for detecting the influx of gas115US 5,592,438 ABaker Hughes Incorporated · 1997
- Method and apparatus for receiving an input by an entertainment device86US 6,351,222 B1ATI International SRL · 2002