Patent Assignment
Reel/Frame 075791/0124
Security Interest
Recorded: 2026-08-26
Pages: 8
Assignor
METROTECH CORPORATION
Executed: 2026-08-26
Assignee
ALTER DOMUS (US) LLC
225 WEST WASHINGTON STREET, 9TH FLOOR, CHICAGO, ILLINOIS, 60606
Covered Properties
(24)
Locator with Removable Antenna Portion
Enhanced Precise Location
Enhanced Precise Location
Precise Location and Orientation of a Concealed Dipole Transmitter
System for Determining a Precise Location and Orientation of a Concealed Dipole Transmitter
Enhanced Precise Location
Signal Select in Underground Line Location
Signal Select in Underground Line Location
Line Locator with a Metal Detector
Cable Detection Apparatus with a Comb Filter
Locator Self-Test
Systems and Methods for Object Detection
Camera Skid
Signal Processing for a Cable Locating Instrument
Signal Generator with Multiple Outputs
Antenna for Underground Line Location
System and Method for Locating Underground Lines Using Antenna and Positioning Information
System and Method for Locating Underground Lines Using Motion Based Responsiveness
System and Method for Locating Underground Lines Using a View-in-the-Ground Indicator
System and Method for Locating a Marker Using a Locator with Multiple Transmitters
Auto-Locate Operation
Underground Line Locator System with Real Time Kinematic and Global Satellite Positioning
Underground Line Locator System With Real Time Kinematic And Global Satellite Positioning
Data Encoding in a Low Frequency Magnetic Field
Related Assignments
(21)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 17, 2006
From: STAPLES, GREG; CROTHALL, GEORGE; WAITE, JAMES W.
To: METROTECH CORPORATION, INC.
Reel/Frame 018130/0319 →
Assignment of Assignor's Interest
Aug 28, 2008
From: LI, KUN
To: METROTECH CORPORATION, INC.
Reel/Frame 021458/0971 →
Assignment of Assignor's Interest
Dec 16, 2008
From: LI, KUN; WAITE, JIM; WELARATNA, RUWAN; OVERBY, JOHAN
To: METROTECH CORPORATION, INC.
Reel/Frame 021986/0140 →
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
May 25, 2012
From: LI, KUN
To: METROTECH CORPORATION, INC.
Reel/Frame 028273/0463 →
Assignment of Assignor's Interest
Mar 4, 2015
From: PETHERICK, STEPHEN JOHN; MAINESCU, GEORGE; DRACEA, ION; STEFANOIU, RAZVAN GABRIEL
To: METROTECH CORPORATION
Reel/Frame 035087/0657 →
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
Mar 7, 2016
From: POLAK, STEVEN
To: METROTECH CORPORATION
Reel/Frame 037910/0631 →
Assignment of Assignor's Interest
Apr 21, 2016
From: MAINESCU, GEORGE; DRACEA, ION; STEFANOIU, RAZVAN GABRIEL; LACATUS, PAUL LUCIAN
To: METROTECH CORPORATION
Reel/Frame 038347/0839 →
Assignment of Assignor's Interest
Jun 21, 2016
From: ROYLE, JOHN MARK; PETHERICK, STEPHEN JOHN
To: METROTECH CORPORATION
Reel/Frame 038977/0847 →
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 22, 2017
From: OVERBY, JOHAN; ROYLE, JOHN MARK
To: METROTECH CORPORATION
Reel/Frame 041684/0655 →
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
Aug 4, 2017
From: YONG, WEI; JORDAN, RICHARD
To: METROTECH CORPORATION
Reel/Frame 043208/0874 →
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 →
Release of Security Interest
Nov 23, 2022
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: METROTECH CORPORATION
Reel/Frame 061867/0944 →
Security Interest
Nov 23, 2022
From: METROTECH CORPORATION
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 061867/0970 →
Release of Security Interest
Aug 24, 2026
From: JPMORGAN CHASE BANK, N.A.
To: METROTECH CORPORATION
Reel/Frame 075755/0167 →