Patent Assignment
Reel/Frame 012512/0658
Assignment of Assignor's Interest
Recorded: 2002-01-18
Pages: 3
Assignor
VARIDIGM CORPORATION
Executed: 2001-12-18
Assignee
GAS RESEARCH INSTITUTE
1700 SOUTH MOUNT PROSPECT ROAD, DES PLAINES, ILLINOIS, 60018
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 2, 2002
From: SIGAFUS, PAUL E.; TORBORG, RALPH H.; RATZ, JAMES W.
To: VARIDIGM CORPORATION
Reel/Frame 012512/0655 →
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 →