G01N 2291/2623
Rails
Official title: Rails; Railroads
G01N2291/2623 (Rails) appears on 132 US grants and 113 published applications in this corpus.
Search patents in G01N- Granted patents
- 132
- Published applications
- 113
- Assignees
- 80
- Inventors
- 293
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 7 |
| 2002 | 8 | 3 |
| 2003 | 4 | 0 |
| 2004 | 3 | 6 |
| 2005 | 3 | 2 |
| 2006 | 4 | 4 |
| 2007 | 4 | 3 |
| 2008 | 1 | 2 |
| 2009 | 1 | 5 |
| 2010 | 3 | 2 |
| 2011 | 5 | 4 |
| 2012 | 2 | 4 |
| 2013 | 4 | 7 |
| 2014 | 6 | 5 |
| 2015 | 3 | 3 |
| 2016 | 3 | 4 |
| 2017 | 3 | 5 |
| 2018 | 3 | 7 |
| 2019 | 7 | 8 |
| 2020 | 5 | 5 |
| 2021 | 6 | 5 |
| 2022 | 3 | 7 |
| 2023 | 4 | 9 |
| 2024 | 4 | 4 |
| 2025 | 7 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for detection of defects in welded rail joints9 Jun 2026US 12,649,502 B1Pulsar Fzc
- Device and method for managing resources for monitoring elongate structures19 May 2026US 12,631,596 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Reference-free load-modulated longitudinal rail stress measurement using ultrasonic LCR waves9 Sep 2025US 12,411,111 B2Southwest Research Institute
- Roller search unit having integrated digital circuitry for detecting rail defects19 Aug 2025US 12,392,756 B2Herzog Services, Inc.
- Method for monitoring service state of switch rail based on feature fusion27 May 2025US 12,313,597 B2Hangzhou Zheda Jingyi Electromechanical Technology Corporation Limited
- Method And System For Non-Contact Rail Inspection For Using A Hybrid Emat, Mfl And Miec Transducer Excited Using Laser Generated Ultrasound2 Oct 2025US 2025/0305987 A1Board of Trustees of Michigan State University
- Ultrasonic testing device for rail bottom and testing method using the same15 May 2025US 2025/0155412 A1Shanghai Oriental Maritime Engineering Technology Co., Ltd.
- Device and method for performing non-destructive control of a rail26 Dec 2024US 2024/0426791 A1Pcm Srl Socio Unico
- Device for performing non-destructive control of a rail19 Dec 2024US 2024/0418679 A1Pcm Srl Socio Unico
- Laser-based Non-destructive Spike Defect Inspection System25 Jul 2024US 2024/0248047 A1University of South Carolina
Most cited
By later US patents
- Ultrasonic defect detection system160US 6,382,028 B1Massachusetts Institute of Technology · 2002
- Method and apparatus generating and detecting torsional waves for long range inspection of pipes and tubes79US 6,624,628 B1Southwest Research Institute · 2003
- Dynamic rail longitudinal stress measuring system74US 5,386,727 AHerzog Contracting Corp. · 1995
- Method and apparatus for testing rails for structural defects74US 5,970,438 ASperry Rail Service, Inc. · 1999
- Method, transducer wheel and flaw detection system for ultrasonic detecting railroad rails74US 6,604,421 B12003