G01N 27/04
By investigating resistance
Official title: by investigating resistance
G01N27/04 (By investigating resistance) appears on 6,064 US grants and 5,926 published applications in this corpus.
Search patents in G01N- Granted patents
- 6,064
- Published applications
- 5,926
- Assignees
- 2,992
- Inventors
- 14,226
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 79 | 0 |
| 1977 | 73 | 0 |
| 1978 | 53 | 0 |
| 1979 | 37 | 0 |
| 1980 | 65 | 0 |
| 1981 | 57 | 0 |
| 1982 | 73 | 0 |
| 1983 | 52 | 0 |
| 1984 | 68 | 0 |
| 1985 | 68 | 0 |
| 1986 | 60 | 0 |
| 1987 | 67 | 0 |
| 1988 | 56 | 0 |
| 1989 | 77 | 0 |
| 1990 | 61 | 0 |
| 1991 | 68 | 0 |
| 1992 | 52 | 0 |
| 1993 | 47 | 0 |
| 1994 | 66 | 0 |
| 1995 | 66 | 0 |
| 1996 | 68 | 0 |
| 1997 | 68 | 0 |
| 1998 | 81 | 0 |
| 1999 | 77 | 0 |
| 2000 | 70 | 0 |
| 2001 | 62 | 17 |
| 2002 | 70 | 91 |
| 2003 | 82 | 94 |
| 2004 | 72 | 115 |
| 2005 | 58 | 127 |
| 2006 | 90 | 108 |
| 2007 | 79 | 93 |
| 2008 | 60 | 115 |
| 2009 | 59 | 157 |
| 2010 | 66 | 154 |
| 2011 | 100 | 126 |
| 2012 | 105 | 170 |
| 2013 | 125 | 190 |
| 2014 | 127 | 245 |
| 2015 | 165 | 275 |
| 2016 | 225 | 312 |
| 2017 | 255 | 388 |
| 2018 | 252 | 401 |
| 2019 | 356 | 440 |
| 2020 | 346 | 465 |
| 2021 | 349 | 390 |
| 2022 | 311 | 379 |
| 2023 | 323 | 301 |
| 2024 | 304 | 304 |
| 2025 | 256 | 275 |
| 2026 | 158 | 194 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 27/12Of a solid body in dependence upon absorption of a fluid2,649
- G01N 27/06Of a liquid1,219
- G01N 27/14Of an electrically-heated body in dependence upon change of temperature677
- G01N 27/20Investigating the presence of flaws541
- G01N 27/041Of a solid body473
- G01N 27/048For determining moisture content of the material429
- G01N 27/045Circuits205
- G01N 27/043Of a granular material72
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Most cited
By later US patents
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