G01F 23/28
By measuring the variations of parameters of electromagnetic or acoustic waves applied
Official title: by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
G01F23/28 (By measuring the variations of parameters of electromagnetic or acoustic waves applied) appears on 3,912 US grants and 3,617 published applications in this corpus.
Search patents in G01F- Granted patents
- 3,912
- Published applications
- 3,617
- Assignees
- 1,722
- Inventors
- 6,704
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 21 | 0 |
| 1978 | 23 | 0 |
| 1979 | 20 | 0 |
| 1980 | 32 | 0 |
| 1981 | 20 | 0 |
| 1982 | 26 | 0 |
| 1983 | 19 | 0 |
| 1984 | 29 | 0 |
| 1985 | 26 | 0 |
| 1986 | 29 | 0 |
| 1987 | 45 | 0 |
| 1988 | 40 | 0 |
| 1989 | 53 | 0 |
| 1990 | 49 | 0 |
| 1991 | 56 | 0 |
| 1992 | 43 | 0 |
| 1993 | 50 | 0 |
| 1994 | 41 | 0 |
| 1995 | 50 | 0 |
| 1996 | 45 | 0 |
| 1997 | 60 | 0 |
| 1998 | 85 | 0 |
| 1999 | 56 | 0 |
| 2000 | 66 | 0 |
| 2001 | 72 | 18 |
| 2002 | 63 | 81 |
| 2003 | 88 | 77 |
| 2004 | 75 | 100 |
| 2005 | 73 | 93 |
| 2006 | 68 | 94 |
| 2007 | 68 | 106 |
| 2008 | 67 | 111 |
| 2009 | 68 | 112 |
| 2010 | 81 | 130 |
| 2011 | 90 | 100 |
| 2012 | 81 | 108 |
| 2013 | 74 | 118 |
| 2014 | 113 | 166 |
| 2015 | 143 | 180 |
| 2016 | 131 | 191 |
| 2017 | 136 | 184 |
| 2018 | 154 | 225 |
| 2019 | 216 | 201 |
| 2020 | 200 | 208 |
| 2021 | 155 | 172 |
| 2022 | 138 | 187 |
| 2023 | 141 | 196 |
| 2024 | 167 | 187 |
| 2025 | 149 | 161 |
| 2026 | 104 | 111 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Injection device and a reusable part therefor6 Oct 2026US 12,752,059 B2Boehringer Ingelheim International GmbH
- Modular field device6 Oct 2026US 12,754,056 B2Endress + Hauser GmbH + Co. KG
- System and method of detecting fluid levels in tanks6 Oct 2026US 12,754,057 B2Plainsight Technologies Inc.
- Method for noise diagnosis, method for signal control, diagnosis device and radiomatic level measuring device29 Sep 2026US 12,747,978 B2VEGA Grieshaber KG
- Distance sensor module29 Sep 2026US 12,748,178 B2Hosiden Corporation
- Measuring device for autonomous and wireless detection of fluid media in an environment8 Oct 2026US 2026/0309533 A1Arianegroup SAS
- Measuring assembly of a field device on a container8 Oct 2026US 2026/0309534 A1VEGA Grieshaber KG
- Method for determining the inner diameter of a surge pipe using a fill level measuring device8 Oct 2026US 2026/0309535 A1Endress + Hauser GmbH + Co. KG
- Signal processing for multi-sensor distance calculation and level measurement in a tank8 Oct 2026US 2026/0309536 A1Rosemount Tank Radar AB
- Smart manhole cover with radar level meter1 Oct 2026US 2026/0297884 A1Bvk Teknoloji Anonim Sirketi
Most cited
By later US patents
- Automatic liquid dispenser and refrigerator with the same865US 7,661,448 B2LG Electronics Inc. · 2010
- Optical identification and monitoring system using pattern recognition for use with vehicles656US 5,845,000 AAutomotive Technologies International, Inc. · 1998
- Reflection free launcher for electromagnetic guide wire602US 7,345,623 B2McEwan Technologies, LLC · 2008
- Vehicular component control systems and methods554US 6,442,465 B2Automotive Technologies International, Inc. · 2002
- Inductance-based dose measurement in syringes551US 6,068,615 AHealth Hero Network, Inc. · 2000