G01N 27/22
By investigating capacitance
Official title: by investigating capacitance
G01N27/22 (By investigating capacitance) appears on 2,624 US grants and 2,708 published applications in this corpus.
Search patents in G01N- Granted patents
- 2,624
- Published applications
- 2,708
- Assignees
- 1,502
- Inventors
- 6,369
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 15 | 0 |
| 1978 | 11 | 0 |
| 1979 | 10 | 0 |
| 1980 | 8 | 0 |
| 1981 | 18 | 0 |
| 1982 | 9 | 0 |
| 1983 | 13 | 0 |
| 1984 | 20 | 0 |
| 1985 | 24 | 0 |
| 1986 | 20 | 0 |
| 1987 | 19 | 0 |
| 1988 | 18 | 0 |
| 1989 | 35 | 0 |
| 1990 | 31 | 0 |
| 1991 | 27 | 0 |
| 1992 | 29 | 0 |
| 1993 | 31 | 0 |
| 1994 | 22 | 0 |
| 1995 | 32 | 0 |
| 1996 | 31 | 0 |
| 1997 | 23 | 0 |
| 1998 | 24 | 0 |
| 1999 | 29 | 0 |
| 2000 | 17 | 0 |
| 2001 | 27 | 7 |
| 2002 | 35 | 29 |
| 2003 | 45 | 57 |
| 2004 | 31 | 57 |
| 2005 | 42 | 44 |
| 2006 | 39 | 48 |
| 2007 | 27 | 42 |
| 2008 | 30 | 46 |
| 2009 | 29 | 56 |
| 2010 | 30 | 55 |
| 2011 | 28 | 67 |
| 2012 | 36 | 52 |
| 2013 | 46 | 87 |
| 2014 | 87 | 142 |
| 2015 | 83 | 127 |
| 2016 | 90 | 142 |
| 2017 | 124 | 156 |
| 2018 | 112 | 167 |
| 2019 | 152 | 200 |
| 2020 | 179 | 243 |
| 2021 | 162 | 191 |
| 2022 | 178 | 171 |
| 2023 | 132 | 123 |
| 2024 | 142 | 166 |
| 2025 | 117 | 126 |
| 2026 | 92 | 107 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 27/223For determining moisture content989
- G01N 27/221By investigating the dielectric properties751
- G01N 27/226Construction of measuring vessels522
- G01N 27/228Circuits therefor261
- G01N 27/227Sensors changing capacitance upon adsorption or absorption of fluid components228
- G01N 27/24Investigating the presence of flaws183
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Most cited
By later US patents
- Optical and electrical methods and apparatus for molecule detection589US 5,846,708 AMassachusetts Institiute of Technology · 1998
- Optical and electrical methods and apparatus for molecule detection585US 5,653,939 ABaylor College of Medicine · 1997
- Multiple chemically modulated capacitance determination400US 5,164,319 AMolecular Devices, LLC · 1992
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