Patent Assignment
Reel/Frame 075755/0167
Release of Security Interest
Recorded: 2026-08-24
Pages: 9
Assignor
JPMORGAN CHASE BANK, N.A.
Executed: 2026-08-16
Assignee
METROTECH CORPORATION
3251 OLCOTT STREET, SANTA CLARA, CALIFORNIA, 95054
Covered Properties
(44)
Sliding Pipe Plug
Method and Apparatus for Digital Detection of Electromagnetic Signal Strength and Signal Direction in Metallic Pipes and Cables
Controlled Power Source for Underground Line Location
Patent:
7,091,872 →
Application:
10/189,286 →
Locator Self-Test
Transmitter for a Line Locating System
Patent:
488,725 →
Application:
29/160,587 →
Detecting Field Distortion in Underground Line Location
Patent:
6,815,953 →
Application:
10/189,342 →
Acoustic Detector with Noise Cancellation
Patent:
7,203,322 →
Application:
10/440,353 →
System and Method for Locating Underground Lines Using Antenna and Positioning Information
Line Locator with a Metal Detector
Systems and Methods for Object Detection
Precise Location and Orientation of a Concealed Dipole Transmitter
System for Determining a Precise Location and Orientation of a Concealed Dipole Transmitter
Line Locator
Patent:
475,936 →
Application:
29/160,535 →
Centerline and Depth Locating Method for Non-Metallic Buried Utility Lines
Method for Decoupling Interference Due to Bleedover in Metallic Pipe and Cable Locators
Automatic Gain Control for a Line Locator
Patent:
6,130,539 →
Application:
09/136,793 →
Precise Location of Buried Metallic Pipes and Cables in the Presence of Signal Distortion
Sensor Fusion for Model-Based Detection in Pipe and Cable Locator Systems
Enhanced Precise Location
Method and Apparatus for Digital Detection of Electronic Markers Using Frequency Adaptation
Enhanced Precise Location
Line Lacator with Accurate Horizontal Displacement Detection
Patent:
6,407,550 →
Application:
09/136,767 →
Antenna for Underground Line Location
Sliding pipe plug
Application:
10/306,403 →
Publication:
US US20040130332A1
Method for Forming Metal Interconnection in Semiconductor Device
Patent:
6,376,355 →
Application:
09/136,798 →
System and Method for Locating Underground Lines Using a View-in-the-Ground Indicator
Signal Processing for a Cable Locating Instrument
Buried Line Locator with Integral Position Sensing
Camera Skid
Underground Line Locator System with Real Time Kinematic and Global Satellite Positioning
Signal Select in Underground Line Location
Underground Locator with a Laser Marking Device
Application:
10/116,614 →
Publication:
US US20030184300A1
Cable Detection Apparatus with a Comb Filter
System and Method for Locating a Marker Using a Locator with Multiple Transmitters
Self-Calibrating Electromagnetic Field Sensor for Locating Buried Conduits
Patent:
5,043,666 →
Application:
07/509,526 →
Enhanced Precise Location
Ticket and data management
Application:
11/114,713 →
Publication:
US US20060026020A1
Long line monitoring and locating system
Application:
11/716,298 →
Publication:
US US20070288195A1
Ticket and data management
Application:
11/433,190 →
Publication:
US US20060282280A1
Method and Apparatus for Digital Detection of Electronic Markers Using Frequency Adaptation
Signal Generator with Multiple Outputs
Auto-Locate Operation
System and Method for Locating Underground Lines Using Motion Based Responsiveness
Locator with Removable Antenna Portion
Related Assignments
(24)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 19, 1998
From: POLAK, STEVAN
To: METROTECH CORPORATION
Reel/Frame 009402/0548 →
Assignment of Assignor's Interest
Jul 16, 2002
From: CRAIG, SAM; MOLINARI, JOSEPH
To: METROTECH CORPORATION
Reel/Frame 013096/0397 →
Assignment of Assignor's Interest
Jul 16, 2002
From: CRAIG, SAM; MOLINARI, JOSEPH
To: METROTECH CORPORATION
Reel/Frame 013097/0396 →
Assignment of Assignor's Interest
Sep 4, 2002
From: BIGELOW, RUSSELL N.
To: METROTECH CORPORATION
Reel/Frame 013266/0181 →
Assignment of Assignor's Interest
Oct 15, 2002
From: BIGELOW, RUSSELL N.; POLAK, STEVEAN; LONG, JAMES; SHTARGOT, JOSEPH
To: METROTECH CORPORATION
Reel/Frame 013383/0797 →
Assignment of Assignor's Interest
Sep 3, 2003
From: BOSTOCK, PETER
To: METROTECH CORPORATION
Reel/Frame 014465/0073 →
Assignment of Assignor's Interest
Dec 3, 2003
From: HARRIS, ROBERT J.
To: METROTECH CORPORATION
Reel/Frame 014793/0894 →
Assignment of Assignor's Interest
Dec 8, 2003
From: WAITE, JAMES W.; OVERBY, JOHAN D.
To: METROTECH CORPORATION
Reel/Frame 014781/0420 →
Assignment of Assignor's Interest
Sep 14, 2004
From: SCHLAPP, HUBERT; OVERBY, JOHAN D.
To: METROTECH CORPORATION, INC.
Reel/Frame 015789/0798 →
Assignment of Assignor's Interest
Mar 30, 2005
From: WAITE, JAMES W.
To: METROTECH CORPORATION, INC.
Reel/Frame 016407/0275 →
Assignment of Assignor's Interest
Aug 3, 2005
From: GUDMUNDSSON, THORKELL; WAITE, JIM; OVERBY, JOHAN; POLAK, STEVAN
To: METROTECH CORPORATION, INC.
Reel/Frame 016864/0578 →
Assignment of Assignor's Interest
Nov 29, 2005
From: WAITE, JAMES W.; WELARATNA, RUWAN
To: METROTECH CORPORATION, INC.
Reel/Frame 016826/0102 →
Correction to the Assignee's Address
Dec 16, 2005
From: GUDMUNDSSON, THORKELL; WAITE, JIM; OVERBY, JOHAN; POLAK, STEVAN
To: METROTECH CORPORATION, INC.
Reel/Frame 017403/0420 →
Assignment of Assignor's Interest
Aug 28, 2008
From: LI, KUN
To: METROTECH CORPORATION, INC.
Reel/Frame 021458/0971 →
Assignment of Assignor's Interest
Feb 20, 2009
From: OVERBY, JOHAN; WAITE, JAMES W.; GARGOV, DIMITAR; LI, KUN
To: METROTECH CORPORATION INC.
Reel/Frame 022287/0896 →
Assignment of Assignor's Interest
Sep 8, 2015
From: OVERBY, JOHAN; WAITE, JAMES W.; GARGOV, DIMITAR; LI, KUN
To: METROTECH CORPORATION INC.
Reel/Frame 036508/0493 →
Assignment of Assignor's Interest
Aug 16, 2016
From: POLAK, STEVAN
To: METROTECH CORPORATION
Reel/Frame 039695/0867 →
Assignment of Assignor's Interest
Nov 16, 2016
From: PEARSON, RICHARD
To: METROTECH CORPORATION
Reel/Frame 040342/0917 →
Assignment of Assignor's Interest
Mar 27, 2017
From: POLAK, STEVAN; ZHANG, CHUNNING
To: METROTECH CORPORATION
Reel/Frame 041751/0678 →
Assignment of Assignor's Interest
Jan 12, 2018
From: POLAK, STEVAN
To: METROTECH CORPORATION
Reel/Frame 045067/0813 →
Patent Security Agreement
Jun 13, 2019
From: METROTECH CORPORATION D/B/A VIVAX-METROTECH CORPORATION; VXMT CORPORATION
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 049456/0508 →
Release of Security Interest in Patents
Nov 8, 2022
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: METROTECH CORPORATION D/B/A VIVAX-METROTECH CORPORATION; VXMT CORPORATION
Reel/Frame 061896/0805 →
Security Interest
Nov 23, 2022
From: METROTECH CORPORATION
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 061867/0970 →
Release of Security Interest
Nov 23, 2022
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: METROTECH CORPORATION
Reel/Frame 061867/0944 →