G01J 1/18
Using comparison with a reference electric value
Official title: using comparison with a reference electric value
G01J1/18 (Using comparison with a reference electric value) appears on 260 US grants and 229 published applications in this corpus.
Search patents in G01J- Granted patents
- 260
- Published applications
- 229
- Assignees
- 206
- Inventors
- 558
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 3 |
| 2003 | 0 | 6 |
| 2004 | 5 | 2 |
| 2005 | 8 | 4 |
| 2006 | 5 | 9 |
| 2007 | 3 | 4 |
| 2008 | 4 | 8 |
| 2009 | 7 | 10 |
| 2010 | 6 | 13 |
| 2011 | 7 | 14 |
| 2012 | 11 | 9 |
| 2013 | 13 | 15 |
| 2014 | 9 | 10 |
| 2015 | 12 | 16 |
| 2016 | 19 | 8 |
| 2017 | 7 | 11 |
| 2018 | 14 | 20 |
| 2019 | 15 | 13 |
| 2020 | 11 | 9 |
| 2021 | 17 | 14 |
| 2022 | 6 | 15 |
| 2023 | 11 | 8 |
| 2024 | 12 | 4 |
| 2025 | 2 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Photoelectric conversion apparatus having measurement circuits, imaging apparatus, control method, and storage medium21 Oct 2025US 12,449,300 B2Canon Kabushiki Kaisha
- Operation method of optical sensor24 Jun 2025US 12,342,084 B2Sensortek Technology Corp.
- Underwater camera as light sensor3 Sep 2024US 12,078,533 B2TidalX AI Inc.
- Systems for real-time laser power monitoring22 Jan 2026US 2026/0022973 A1Alcon Inc.
- A photometric process measurement arrangement and a method for performing a photometric measurement9 Oct 2025US 2025/0314526 A1Hach Lange GmbH
- Method for monitoring a taillight, monitoring system and vehicle31 Jul 2025US 2025/0242754 A1ZF CV Systems Global GmbH
- Endpoint detection in low open area and/or high aspect ratio etch applications14 Nov 2024US 2024/0379469 A1APPLIED Materials.Inc.
- Data output device26 Sep 2024US 2024/0319008 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Multiple wavelength light photometer for non-invasive monitoring379US 5,088,493 ASclavo S.p.A. · 1992
- Sensor configuration for substantial spacing from a small aperture267US 6,831,268 B2Gentex Corporation · 2004
- Safety shut-off device for laser surgical instruments employing blackbody emitters139US 6,932,809 B2CardioFocus, Inc. · 2005
- Grain quality analyzer85US 4,260,262 ANeotec Corporation · 1981
- Optical analyzer for agricultural products79US 4,040,747 ANeotec Corporation · 1977