G01N 27/9053
Compensating for probe to workpiece spacing
Official title: {Compensating for probe to workpiece spacing}
G01N27/9053 (Compensating for probe to workpiece spacing) appears on 68 US grants and 42 published applications in this corpus.
Search patents in G01N- Granted patents
- 68
- Published applications
- 42
- Assignees
- 59
- Inventors
- 166
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 2 | 2 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 7 |
| 2019 | 2 | 0 |
| 2020 | 4 | 1 |
| 2021 | 2 | 3 |
| 2022 | 2 | 3 |
| 2023 | 0 | 1 |
| 2024 | 3 | 3 |
| 2025 | 4 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System, method and apparatus for lading measurement in a rail car17 Feb 2026US 12,553,759 B2BNSF Railway Company
- Lift-off compensated eddy current system18 Nov 2025US 12,474,300 B2Evident Canada, Inc.
- System and method for inspecting metal parts18 Nov 2025US 12,474,301 B2Vallourec SoluõEs Tubulares Do Brasil S.A.
- Steel plate surface material property testing device and steel plate surface material property testing method24 Jun 2025US 12,339,251 B2Posco
- Defect identification method, and array detection probe14 Jan 2025US 12,196,710 B1China University of Petroleum (East China)
- Matrix capture approach for eddy current (ec) inspection17 Sep 2026US 2026/0276592 A1Evident Canada, Inc.
- System, method and apparatus for lading measurement in a rail car25 Jun 2026US 2026/0177412 A1BNSF Railway Company
- Eddy-current flaw detection device and eddy-current flaw detection method10 Jul 2025US 2025/0224376 A1IHI Corporation
- System, method and apparatus for lading measurement in a rail car13 Jun 2024US 2024/0192043 A1BNSF Railway Company
- Lift-off compensated eddy current system11 Apr 2024US 2024/0118240 A1Evident Canada, Inc.
Most cited
By later US patents
- Multi frequency eddy current test apparatus with intermediate frequency processing66US 4,467,281 AElectric Power Research Institute, Inc. · 1984
- Lift off compensation of eddy current crack detection system by controlling damping resistance of oscillator52US 4,609,870 AHocking Electronics Limited · 1986
- Apparatus and method for detecting structural cracks using a movable detector35US 5,485,084 AThe Boeing Company · 1996
- Eddy current method of acquiring the surface layer properties of a metallic target34US 5,525,903 AMicro-Epsilon Messtechnik GmbH & Co.KG · 1996
- Transient electromagnetic method for detecting corrosion on conductive containers having variations in jacket thickness33US 4,843,319 AAtlantic Richfield Company · 1989