Sperry Rail, Inc.
11Patents
8Active
11Granted
45Portfolio score
Filing activity: Oct 10, 2001 → Apr 30, 2020 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6600999B2 | Hi-rail vehicle-based rail inspection system | Performing Operations; Transporting | 67 | Expired |
| US6594591B2 | Method and system for processing rail inspection test data | Performing Operations; Transporting | 34 | Expired |
| US9429545B2 | System and method for non-destructive testing of railroad rails using ultrasonic apparatuses mounted within fluid-filled tires maintained at constant temperatures | Physics | 21 | Active |
| US7849748B2 | Method of and an apparatus for in situ ultrasonic rail inspection of a railroad rail | Physics | 18 | Active |
| US6476603B2 | Brush assembly for magnetic induction test apparatus | Performing Operations; Transporting | 18 | Expired |
| US8739631B2 | System and method for non-destructive testing of railroad rails using ultrasonic apparatuses mounted within fluid-filled tires maintained at constant temperatures | Physics | 6 | Active |
| US11078631B2 | System and method for inspecting a rail using machine learning | Physics | 2 | Active |
| US10168304B2 | Rail inspection apparatus and method | Physics | 1 | Active |
| US10836407B2 | System and method for inspecting a rail | Physics | 1 | Active |
| US11333635B2 | Rolling search unit for ultrasonic railroad rail inspection | Physics | 1 | Active |
| US10913466B2 | Adaptive rail inspection carriage | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.