G01F 23/0015
With a whistle or other sonorous signal
Official title: {with a whistle or other sonorous signal}
G01F23/0015 (With a whistle or other sonorous signal) appears on 62 US grants and 72 published applications in this corpus.
Search patents in G01F- Granted patents
- 62
- Published applications
- 72
- Assignees
- 44
- Inventors
- 147
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 4 |
| 2006 | 0 | 0 |
| 2007 | 2 | 4 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 2 | 2 |
| 2015 | 1 | 3 |
| 2016 | 4 | 7 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 3 | 7 |
| 2020 | 4 | 10 |
| 2021 | 5 | 2 |
| 2022 | 4 | 4 |
| 2023 | 5 | 7 |
| 2024 | 5 | 6 |
| 2025 | 7 | 4 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas monitoring and alarm systems and methods including level indicator unit30 Dec 2025US 12,511,987 B2Eleven Eleven Technologies, LLC
- Vent alarm with protective cover23 Dec 2025US 12,505,730 B2
- Wastewater pumping system accessory30 Sep 2025US 12,430,999 B2Zoeller Pump Company, LLC
- Water level detection device and method for controlling water level detection device29 Jul 2025US 12,372,394 B2Samsung Electronics Co., Ltd.
- Liquid measurement systems, apparatus, and methods optimized with temperature sensing15 Jul 2025US 12,362,047 B2Bigfoot Biomedical, Inc.
- Vent alarm with protective cover26 Feb 2026US 2026/0057758 A1
- Utility holder25 Dec 2025US 2025/0386982 A1
- Liquid measurement systems, apparatus, and methods optimized with temperature sensing23 Oct 2025US 2025/0329425 A1Bigfoot Biomedical, Inc.
- Electric energy storage module with liquid detection29 May 2025US 2025/0174746 A1Volvo Truck Corporation
- Systems and methods for antimicrobial application and related data collection13 Feb 2025US 2025/0049049 A1Cms Technology, LLC
Most cited
By later US patents
- Audible low-fuel alarm for propane fuel tank28US 4,688,028 A1987
- Toilet reservoir fill alarm20US 4,547,768 A1985
- Level sensor and alarm19US 4,987,409 A1991
- Liquid measurement systems, apparatus, and methods optimized with temperature sensing14US 10,255,991 B2Common Sensing Inc. · 2019
- Fuel filler alarm for boats14US 5,023,608 A1991