G01F 1/64
By measuring electrical currents passing through the fluid flow
Official title: by measuring electrical currents passing through the fluid flow; measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact or friction effects (G01F1/58 takes precedence)
G01F1/64 (By measuring electrical currents passing through the fluid flow) appears on 203 US grants and 149 published applications in this corpus.
Search patents in G01F- Granted patents
- 203
- Published applications
- 149
- Assignees
- 168
- Inventors
- 456
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 4 |
| 2004 | 4 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 4 | 5 |
| 2008 | 3 | 5 |
| 2009 | 4 | 6 |
| 2010 | 4 | 19 |
| 2011 | 9 | 5 |
| 2012 | 2 | 2 |
| 2013 | 3 | 4 |
| 2014 | 2 | 7 |
| 2015 | 5 | 5 |
| 2016 | 2 | 2 |
| 2017 | 6 | 6 |
| 2018 | 3 | 11 |
| 2019 | 10 | 6 |
| 2020 | 14 | 11 |
| 2021 | 4 | 9 |
| 2022 | 5 | 9 |
| 2023 | 5 | 7 |
| 2024 | 5 | 7 |
| 2025 | 10 | 8 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Backflow alert system24 Mar 2026US 12,584,298 B2Watts Regulator Co.
- Void fraction sensor, flowmeter using the same, and cryogenic liquid transfer pipe20 Jan 2026US 12,529,669 B2KYOCERA Corporation
- Capacitive electrical conductivity sensor integrated in a water meter9 Dec 2025US 12,492,927 B2Itron International, LLC
- Electrochemical apparatus for monitoring flow rate18 Nov 2025US 12,474,189 B2Caremedi Co., Ltd.
- Void fraction sensor, flowmeter using the same, and cryogenic liquid transfer pipe11 Nov 2025US 12,467,775 B2KYOCERA Corporation
- Systems and methods for quality verification for a mixture16 Jul 2026US 2026/0202371 A13M Innovative Properties Company
- Assembly comprising a milking device and a measuring device for measuring a mass flow of milked milk2 Jul 2026US 2026/0182532 A1GEA Farm Technologies GmbH
- Capacitive electrical conductivity sensor integrated in a water meter23 Apr 2026US 2026/0110562 A1Itron, Inc.
- Microfluidic electrochemical device for measuring a volume flow rate20 Nov 2025US 2025/0354844 A1Noptrack
- Method of Monitoring a Chemical Process in a Column Apparatus31 Jul 2025US 2025/0242277 A1
Most cited
By later US patents
- Sensor having electrode for determining the rate of flow of a fluid519US 6,801,041 B2Abbott Laboratories · 2004
- Capacitance probe for fluid flow and volume measurements397US 5,596,150 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1997
- Device and method employing shape memory alloy61US 7,951,114 B2Abbott Diabetes Care Inc. · 2011
- Flow detection apparatus57US 4,535,637 AWilgood Corporation · 1985
- Fluid measuring device56US 4,280,360 ANissan Motor Co., Ltd. · 1981