G01N 27/02
Investigating or analysing materials by the use of electric, electrochemical, or magnetic
Official title: by investigating impedance
G01N27/02 (Investigating or analysing materials by the use of electric, electrochemical, or magnetic) appears on 9,425 US grants and 9,507 published applications in this corpus.
Search patents in G01N- Granted patents
- 9,425
- Published applications
- 9,507
- Assignees
- 4,255
- Inventors
- 21,321
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 102 | 0 |
| 1977 | 91 | 0 |
| 1978 | 65 | 0 |
| 1979 | 49 | 0 |
| 1980 | 77 | 0 |
| 1981 | 76 | 0 |
| 1982 | 82 | 0 |
| 1983 | 68 | 0 |
| 1984 | 87 | 0 |
| 1985 | 95 | 0 |
| 1986 | 81 | 0 |
| 1987 | 86 | 0 |
| 1988 | 82 | 0 |
| 1989 | 114 | 0 |
| 1990 | 94 | 0 |
| 1991 | 95 | 0 |
| 1992 | 86 | 0 |
| 1993 | 86 | 0 |
| 1994 | 91 | 0 |
| 1995 | 99 | 0 |
| 1996 | 114 | 0 |
| 1997 | 97 | 0 |
| 1998 | 110 | 0 |
| 1999 | 108 | 0 |
| 2000 | 93 | 0 |
| 2001 | 92 | 25 |
| 2002 | 113 | 127 |
| 2003 | 133 | 160 |
| 2004 | 107 | 182 |
| 2005 | 105 | 186 |
| 2006 | 141 | 168 |
| 2007 | 113 | 142 |
| 2008 | 100 | 173 |
| 2009 | 95 | 229 |
| 2010 | 109 | 225 |
| 2011 | 141 | 212 |
| 2012 | 149 | 255 |
| 2013 | 191 | 307 |
| 2014 | 226 | 426 |
| 2015 | 285 | 499 |
| 2016 | 348 | 511 |
| 2017 | 436 | 611 |
| 2018 | 436 | 637 |
| 2019 | 551 | 697 |
| 2020 | 596 | 730 |
| 2021 | 554 | 624 |
| 2022 | 507 | 597 |
| 2023 | 482 | 478 |
| 2024 | 479 | 531 |
| 2025 | 427 | 457 |
| 2026 | 281 | 318 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Construction material assessment method and systems6 Oct 2026US 12,754,146 B2
- Non-invasive method and system for detecting quality of packaged milk6 Oct 2026US 12,754,178 B2Tata Consultancy Services Limited
- Aerosol generating device comprising semiconductor heaters29 Sep 2026US 12,746,349 B2Altria Client Services LLC
- Portable vacuum pump with protection against suction of liquids29 Sep 2026US 12,747,052 B2Status D.O.O. Metlika
- Automated and wireless accelerated heat treat life testing system29 Sep 2026US 12,748,009 B2UIF (University Industry Foundation), Yonsei University
- An organ container, an impedance meter for the organ container, and a method for defining a deterioration state of an organ8 Oct 2026US 2026/0305604 A1Tampere University Foundation sr
- Substrate inspection apparatus8 Oct 2026US 2026/0309658 A1Samsung Electronics Co., Ltd.
- Apparatus and method for measuring electrochemical impedance spectroscopy8 Oct 2026US 2026/0309659 A1SK On Co., Ltd.
- System for detecting defects within a fluid flowing through a circuit comprising a fluidic device, and for preventing failure of the device as a result of the defects8 Oct 2026US 2026/0309660 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Microfluidic integrated cmos based impedance array biosensor8 Oct 2026US 2026/0309661 A1University of Utah Research Foundation
Most cited
By later US patents
- Gastric treatment and diagnosis device and method1,899US 6,535,764 B2IntraPace, Inc. · 2003
- 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
- Apparatus and process for sensing fluoro species in semiconductor processing systems484US 7,080,545 B2Advanced Technology Materials, Inc. · 2006
- System and method for determining an abused sensor during analyte measurement484US 7,977,112 B2Roche Diagnostics Operations, Inc. · 2011