G01N 27/002
Investigating or analysing materials by the use of electric, electrochemical, or magnetic
Official title: {by investigating the work function voltage}
G01N27/002 (Investigating or analysing materials by the use of electric, electrochemical, or magnetic) appears on 89 US grants and 69 published applications in this corpus.
Search patents in G01N- Granted patents
- 89
- Published applications
- 69
- Assignees
- 78
- Inventors
- 210
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 3 |
| 2004 | 2 | 3 |
| 2005 | 3 | 5 |
| 2006 | 8 | 3 |
| 2007 | 1 | 1 |
| 2008 | 4 | 3 |
| 2009 | 2 | 3 |
| 2010 | 2 | 1 |
| 2011 | 2 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 3 |
| 2014 | 2 | 2 |
| 2015 | 6 | 4 |
| 2016 | 1 | 0 |
| 2017 | 0 | 6 |
| 2018 | 4 | 3 |
| 2019 | 1 | 5 |
| 2020 | 5 | 5 |
| 2021 | 1 | 4 |
| 2022 | 4 | 3 |
| 2023 | 6 | 2 |
| 2024 | 0 | 5 |
| 2025 | 3 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and system to extend the conditions of application of an inversion of the Hodgkin-Huxley gating model22 Sep 2026US 12,742,771 B2
- Detecting hydrocarbon fuels in lubrication oils6 Jan 2026US 12,517,107 B2King Abdullah University of Science and Technology
- Test device for determining an effective work function, method of manufacturing the same and method of determining an effective work function11 Nov 2025US 12,467,893 B2SK hynix Inc.
- Circuitry for analyte measurement2 Sep 2025US 12,405,243 B2Cirrus Logic, Inc.
- Ion detection device and ion detection method14 Jan 2025US 12,196,703 B2Hamamatsu Photonics K.K.
- Triboelectric nanogenerator and operation method thereof16 Apr 2026US 2026/0106558 A1National Taiwan University
- Circuitry for analyte measurement20 Nov 2025US 2025/0354953 A1Cirrus Logic International Semiconductor Ltd.
- Detecting hydrocarbon fuels in lubrication oils17 Oct 2024US 2024/0345062 A1King Abdullah University of Science and Technology
- Hydrogen impurity testing system and hydrogen impurity testing method5 Sep 2024US 2024/0297316 A1Hitachi High-Tech Science Corporation
- Sodium Hypochlorite Generator with Water Salinity Detection Device4 Jul 2024US 2024/0217849 A1Guangzhou Rising Dragon Recreation Industrial Co., Ltd.
Most cited
By later US patents
- Method and apparatus for the measurement of the corrosion potential between a coated metal surface and a reference electrode71US 5,369,370 AMax-Planck-Institut fuer Eisenforschung GmbH · 1994
- Gas-sensitive field-effect transistor with air gap27US 7,459,732 B2Micronas GmbH · 2008
- Non-contact method for determining the presence of a contaminant in a semiconductor device20US 6,255,128 B1Lucent Technologies Inc. · 2001
- Method and system for detecting metal contamination on a semiconductor wafer16US 6,759,255 B2KLA-Tencor Technologies Corporation · 2004
- Contact potential difference sensor to monitor oil properties15US 7,019,654 B2Georgia Tech Research Corporation · 2006