Assignee
TETRA TECH
US135 patents
Top patents by PatentIndex Score
US7922424B2Apr 12, 2011
Method of cutting target members using a cutting saw device
TETRA TECH47 citations97
US6143698ANov 7, 2000
Method for removing filtercake
TETRA TECH186 citations97
US4595839AJun 17, 1986
Bidirectional optical electronic converting connector with integral preamplification
TETRA TECH181 citations96
US4268115AMay 19, 1981
Quick-release fiber-optic connector
TETRA TECH221 citations96
US5917110AJun 29, 1999
Moisture-resistant calcium containing particles
TETRA TECH75 citations95
US11259007B2Feb 22, 2022
3D track assessment method
TETRA TECH9 citations94
US11169269B2Nov 9, 2021
System and method for generating and interpreting point clouds of a rail corridor along a survey path
TETRA TECH17 citations94
US10616558B2Apr 7, 2020
3D track assessment method
TETRA TECH11 citations94
US10616557B2Apr 7, 2020
3D track assessment method
TETRA TECH14 citations94
US10616556B2Apr 7, 2020
3D track assessment method
TETRA TECH13 citations94
US10582187B2Mar 3, 2020
3D track assessment method
TETRA TECH20 citations94
US10362293B2Jul 23, 2019
3D track assessment system and method
TETRA TECH23 citations94
US9950720B2Apr 24, 2018
Light emission power control apparatus and method
TETRA TECH19 citations94
US9860962B2Jan 2, 2018
Light emission power control apparatus and method
TETRA TECH21 citations94
US9849895B2Dec 26, 2017
Sensor synchronization apparatus and method
TETRA TECH27 citations94
US9618335B2Apr 11, 2017
Light emission power control apparatus and method
TETRA TECH21 citations94
US5891225AApr 6, 1999
Method for applying halide brines to surfaces
TETRA TECH62 citations93
US6019888AFeb 1, 2000
Method of reducing moisture and solid content of bitumen extracted from tar sand minerals
TETRA TECH57 citations92
US5907908AJun 1, 1999
Dehumidifying pouch
TETRA TECH90 citations92
US4360249ANov 23, 1982
Optical feedthrough for pressure vessels
TETRA TECH42 citations92
US9052037B2Jun 9, 2015
Rapid deployment frac water transfer system
TETRA TECH12 citations91
US6730234B2May 4, 2004
Method for regeneration of used halide fluids
TETRA TECH63 citations91
US6131661AOct 17, 2000
Method for removing filtercake
TETRA TECH162 citations91
US6124244ASep 26, 2000
Clear brine drill-in fluid
TETRA TECH79 citations91
US5006239AApr 9, 1991
apparatus for treatment of oily sludge
TETRA TECH46 citations91
US4554511ANov 19, 1985
Offset voltage correction network for instantaneous floating point amplifier
TETRA TECH30 citations91
US8696245B2Apr 15, 2014
Articulating band saw and method
TETRA TECH14 citations90
US7645093B1Jan 12, 2010
Articulating band saw and method
TETRA TECH25 citations90
US5776344AJul 7, 1998
Method for removing nitrogen from wastewater
TETRA TECH62 citations90
US5403495AApr 4, 1995
Fluoride removal system
TETRA TECH48 citations89
US5039428AAug 13, 1991
Waste water treatment process using improved recycle of high density sludge
TETRA TECH47 citations89
US6886635B2May 3, 2005
Filter cake removal fluid and method
TETRA TECH57 citations88
US11377130B2Jul 5, 2022
Autonomous track assessment system
TETRA TECH13 citations86
US10730538B2Aug 4, 2020
Apparatus and method for calculating plate cut and rail seat abrasion based on measurements only of rail head elevation and crosstie surface elevation
TETRA TECH15 citations86
US10625760B2Apr 21, 2020
Apparatus and method for calculating wooden crosstie plate cut measurements and rail seat abrasion measurements based on rail head height
TETRA TECH15 citations86
US10349491B2Jul 9, 2019
Light emission power control apparatus and method
TETRA TECH16 citations86
US10322734B2Jun 18, 2019
Sensor synchronization apparatus and method
TETRA TECH16 citations86
US7387031B1Jun 17, 2008
Method for monitoring corrosion damage to a metal sample
TETRA TECH22 citations86
US4577184AMar 18, 1986
Security system with randomly modulated probe signal
TETRA TECH36 citations86
US11399172B2Jul 26, 2022
3D track assessment apparatus and method
TETRA TECH3 citations84
US11196981B2Dec 7, 2021
3D track assessment apparatus and method
TETRA TECH8 citations84
US10908291B2Feb 2, 2021
System and method for generating and interpreting point clouds of a rail corridor along a survey path
TETRA TECH6 citations84
US10807623B2Oct 20, 2020
Apparatus and method for gathering data from sensors oriented at an oblique angle relative to a railway track
TETRA TECH9 citations84
US10435052B2Oct 8, 2019
Broken wheel detection system
TETRA TECH13 citations84
US10384697B2Aug 20, 2019
Protective shroud for enveloping light from a light emitter for mapping of a railway track
TETRA TECH12 citations84
US9849894B2Dec 26, 2017
Protective shroud for enveloping light from a light emitter for mapping of a railway track
TETRA TECH12 citations84
US10213757B1Feb 26, 2019
In situ treatment analysis mixing system
TETRA TECH5 citations83
US9919370B1Mar 20, 2018
Method of cutting target members using a cutting saw device
TETRA TECH4 citations83
US8540022B1Sep 24, 2013
Method of delivering frac fluid and additives
TETRA TECH5 citations83
US9028172B2May 12, 2015
Articulating band saw and method
TETRA TECH4 citations82
Showing the top 50 of 135 patents by PatentIndex Score.