Patent Assignment
Reel/Frame 012512/0655
Assignment of Assignor's Interest
Recorded: 2002-01-02
Pages: 3
Assignors
SIGAFUS, PAUL E.
Executed: 2001-12-18
TORBORG, RALPH H.
Executed: 2001-12-18
RATZ, JAMES W.
Executed: 2001-12-18
Assignee
VARIDIGM CORPORATION
2355 POLARIS LANE, SUITE 128, PLYMOUTH, MINNESOTA, 55447
Covered Property
(1)
Variable output combustion controller
Application:
60/322,133 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 18, 2002
From: VARIDIGM CORPORATION
To: GAS RESEARCH INSTITUTE
Reel/Frame 012512/0658 →
Assignment of Assignor's Interest
Sep 3, 2002
From: GAS RESEARCH INSTITUTE
To: VARIDIGM CORPORATION
Reel/Frame 013231/0921 →
Assignment of Assignor's Interest
Sep 24, 2012
From: VARIDIGM CORPORATION
To: ACACIA RESEARCH GROUP LLC
Reel/Frame 029013/0427 →
Assignment of Assignor's Interest
Sep 24, 2012
From: ACACIA RESEARCH GROUP LLC
To: HVAC MODULATION TECHNOLOGIES LLC
Reel/Frame 029013/0580 →