Patent Assignment
Reel/Frame 038431/0900
Assignment of Assignor's Interest
Recorded: 2016-04-14
Pages: 2
Assignee
ETAGEN, INC.
186 CONSTITUTION DRIVE, MENLO PARK, CALIFORNIA, 94025
Covered Property
(1)
Control of Piston Trajectory in a Free-Piston Combustion Engine
Patent:
9,657,675 →
Application:
15/087,990 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Jul 9, 2019
From: ETAGEN, INC.
To: TRINITY CAPITAL FUND III, L.P.
Reel/Frame 049704/0976 →
Change of Name
Jan 30, 2020
From: ETAGEN, INC.
To: MAINSPRING ENERGY, INC.
Reel/Frame 051761/0180 →
Security Interest
Jun 6, 2025
From: MAINSPRING ENERGY, INC.
To: AVENUE VENTURE OPPORTUNITIES FUND II, L.P., AS AGENT
Reel/Frame 071499/0428 →
Security Agreement
Jun 18, 2025
From: TRINITY CAPITAL INC.
To: MAINSPRING ENERGY, INC.
Reel/Frame 071675/0669 →
Security Agreement
Jun 18, 2025
From: TRINITY CAPITAL INC.
To: MAINSPRING ENERGY, INC.
Reel/Frame 071675/0697 →