IP Library › Assignment 026342/0909
Patent Assignment
Reel/Frame 026342/0909

Assignment of Assignor's Interest

Recorded: 2011-05-26 Pages: 4
Assignors
TSCHIRHART, DARRYL J.
Executed: 2011-03-31
JAIN, PRAVEEN K.
Executed: 2011-04-18
Assignee
QUEEN'S UNIVERSITY AT KINGSTON
QUEEN'S UNIVERSITY, KINGSTON, ON, K7L 3N6, CANADA
Covered Property (1)
Controller for a Resonant Power Converter
Patent: 8,638,571 →
Application: 13/030,737 →
Publication: US 2011/0205761
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 2, 2013
From: QUEEN'S UNIVERSITY AT KINGSTON
To: SPARQ SYSTEMS INC.
Reel/Frame 031327/0756 →
Security Interest Sep 2, 2015
From: SPARQ SYSTEMS INC.
To: COMERICA BANK
Reel/Frame 036476/0088 →
Release of Security Interest Nov 17, 2017
From: COMERICA BANK
To: SPARQ SYSTEMS INC.
Reel/Frame 044161/0493 →