Tetra Tech, Inc.
🏢 View company profile →42Patents
37Active
42Granted
55Portfolio score
Filing activity: Jun 1, 1979 → Nov 7, 2022 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4268115A | Quick-release fiber-optic connector | Physics | 193 | Expired |
| US4595839A | Bidirectional optical electronic converting connector with integral preamplification | Electricity | 115 | Expired |
| US4360249A | Optical feedthrough for pressure vessels | Physics | 25 | Expired |
| US4554511A | Offset voltage correction network for instantaneous floating point amplifier | Electricity | 24 | Expired |
| US9849895B2 | Sensor synchronization apparatus and method | Physics | 23 | Active |
| US4577184A | Security system with randomly modulated probe signal | Physics | 21 | Expired |
| US9618335B2 | Light emission power control apparatus and method | Emerging Cross-Sectional Technologies | 19 | Active |
| US9950720B2 | Light emission power control apparatus and method | Emerging Cross-Sectional Technologies | 18 | Active |
| US9860962B2 | Light emission power control apparatus and method | Physics | 18 | Active |
| US10362293B2 | 3D track assessment system and method | Physics | 17 | Active |
| US10322734B2 | Sensor synchronization apparatus and method | Physics | 13 | Active |
| US10730538B2 | Apparatus and method for calculating plate cut and rail seat abrasion based on measurements only of rail head elevation and crosstie surface elevation | Performing Operations; Transporting | 13 | Active |
| US10625760B2 | Apparatus and method for calculating wooden crosstie plate cut measurements and rail seat abrasion measurements based on rail head height | Physics | 13 | Active |
| US10582187B2 | 3D track assessment method | Physics | 13 | Active |
| US10349491B2 | Light emission power control apparatus and method | Emerging Cross-Sectional Technologies | 13 | Active |
| US10616556B2 | 3D track assessment method | Physics | 11 | Active |
| US9849894B2 | Protective shroud for enveloping light from a light emitter for mapping of a railway track | Performing Operations; Transporting | 11 | Active |
| US10616557B2 | 3D track assessment method | Physics | 11 | Active |
| US10384697B2 | Protective shroud for enveloping light from a light emitter for mapping of a railway track | Performing Operations; Transporting | 11 | Active |
| US10616558B2 | 3D track assessment method | Physics | 10 | Active |
| US11259007B2 | 3D track assessment method | Physics | 9 | Active |
| US10435052B2 | Broken wheel detection system | Electricity | 7 | Active |
| US11169269B2 | System and method for generating and interpreting point clouds of a rail corridor along a survey path | Physics | 7 | Active |
| US11377130B2 | Autonomous track assessment system | Performing Operations; Transporting | 7 | Active |
| US10807623B2 | Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track | Physics | 6 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.