G01F 23/2968
Transducers specially adapted for acoustic level indicators
Official title: {Transducers specially adapted for acoustic level indicators}
G01F23/2968 (Transducers specially adapted for acoustic level indicators) appears on 232 US grants and 207 published applications in this corpus.
Search patents in G01F- Granted patents
- 232
- Published applications
- 207
- Assignees
- 149
- Inventors
- 474
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 8 |
| 2003 | 11 | 5 |
| 2004 | 4 | 13 |
| 2005 | 6 | 8 |
| 2006 | 7 | 9 |
| 2007 | 5 | 14 |
| 2008 | 6 | 8 |
| 2009 | 3 | 7 |
| 2010 | 8 | 5 |
| 2011 | 14 | 7 |
| 2012 | 7 | 8 |
| 2013 | 3 | 3 |
| 2014 | 2 | 8 |
| 2015 | 7 | 6 |
| 2016 | 3 | 4 |
| 2017 | 6 | 15 |
| 2018 | 4 | 12 |
| 2019 | 12 | 15 |
| 2020 | 21 | 11 |
| 2021 | 8 | 6 |
| 2022 | 4 | 8 |
| 2023 | 9 | 6 |
| 2024 | 6 | 6 |
| 2025 | 4 | 9 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Sensor apparatus for capturing a filling level and/or a quality of a fluid, and method for producing said apparatus15 Jul 2025US 12,359,959 B2Vitesco Technologies Germany GmbH
- Acoustic detection of a usage of an injection device24 Jun 2025US 12,337,154 B2Sanofi
- Piezoelectric sensor and liquid level measuring system20 Aug 2026US 2026/0243595 A1ABB Schweiz AG
- Ultrasonic liquid level sensor probe7 May 2026US 2026/0126316 A1Kouraku Co., Ltd.
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Most cited
By later US patents
- Medical apparatus for monitoring body liquid discharge103US 4,658,834 AC. R. Bard, Inc. · 1987
- Fluid level sensor with dry couplant82US 6,412,344 B1Rosemount Aerospace Inc. · 2002
- Liquid level sensor79US 5,697,248 AThe Whitaker Corporation · 1997
- Resonator sensors employing piezoelectric benders for fluid property sensing70US 6,044,694 AVideojet Systems International, Inc. · 2000
- Ultrasonic fuel level sensing device68US 5,319,973 ACaterpillar Inc. · 1994