G01F 25/13
Using a reference counter
Official title: {using a reference counter}
G01F25/13 (Using a reference counter) appears on 138 US grants and 119 published applications in this corpus.
Search patents in G01F- Granted patents
- 138
- Published applications
- 119
- Assignees
- 113
- Inventors
- 334
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 3 | 5 |
| 2004 | 4 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 3 |
| 2007 | 2 | 8 |
| 2008 | 4 | 1 |
| 2009 | 1 | 4 |
| 2010 | 3 | 4 |
| 2011 | 2 | 4 |
| 2012 | 4 | 3 |
| 2013 | 2 | 5 |
| 2014 | 2 | 6 |
| 2015 | 2 | 3 |
| 2016 | 3 | 2 |
| 2017 | 9 | 6 |
| 2018 | 2 | 9 |
| 2019 | 7 | 6 |
| 2020 | 6 | 4 |
| 2021 | 3 | 7 |
| 2022 | 7 | 9 |
| 2023 | 8 | 6 |
| 2024 | 7 | 7 |
| 2025 | 6 | 4 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Liquid flow rate estimation and verification by direct liquid measurement507US 5,866,795 AAPPLIED Materials.Inc. · 1999
- Thermal mass flowmeter and mass flow controller, flowmetering system and method131US 5,911,238 AEmerson Electric Co. · 1999
- Tamper detection device for utility meter106US 5,086,292 AIris Systems Inc. · 1992
- Method and apparatus for detecting and controlling mass flow106US 5,944,048 AEmerson Electric Co. · 1999
- Method and apparatus for detecting and controlling mass flow81US 5,975,126 AEmerson Electric Co. · 1999