Patent Assignment
Reel/Frame 071675/0669
Security Agreement
Recorded: 2025-06-18
Pages: 12
Assignor
TRINITY CAPITAL INC.
Executed: 2025-06-06
Assignee
MAINSPRING ENERGY, INC.
3601 HAVEN AVENUE, MENLO PARK, CALIFORNIA, 94025
Covered Properties
(41)
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Managing a Clearance Gap in a Piston Engine
Methods and Systems for Controlling a Multiphase Electromagnetic Machine
Patent:
8,344,669 →
Application:
13/437,659 →
Methods and Systems for Controlling a Multiphase Electromagnetic Machine
High-Efficiency Two-Piston Linear Combustion Engine
High-Efficiency Linear Combustion Engne
High-Efficiency Linear Combustion Engine
High-Efficiency Linear Combustion Engine
High-Efficiency Linear Combustion Engine
High-Efficiency Linear Combustion Engine
High-Efficiency Linear Combustion Engine
High-Efficiency Linear Combustion Engine
Linear Free Piston Combustion Engine with Indirect Work Extraction via Gas Linkage
Mechanism for Maintaining a Clearance Gap
Energy Storage and Conversion in Free-Piston Combustion Engines
Energy Storage and Conversion in Free-Piston Combustion Engines
Energy Storage and Conversion in Free-Piston Combustion Engines
Control of Piston Trajectory in a Free-Piston Combustion Engine
Patent:
9,657,675 →
Application:
15/087,990 →
Control of Piston Trajectory in a Free-Piston Combustion Engine
Control of Piston Trajectory in a Free-Piston Combustion Engine
Open-Faced Piston Assembly
Patent:
9,856,821 →
Application:
15/294,438 →
Open-Faced Piston Assembly
Reinforced Sealing Rings
Sealing Ring Having a Porous Layer
Application:
16/059,976 →
Publication:
US 2019/0049007
Piston-Integrated Gap Cover
Piston Sealing Ring Assembly Having a Gap Cover Element
Piston Sealing Ring Assemblies
Piston Seal with Solid Lubricant Applicator
Auto-Braking for an Electromagnetic Machine
Auto-Braking for an Electromagnetic Machine
Dc-Dc Converter in a Non-Steady System
Integrated Linear Generator System
Application:
62/781,586 →
Sealing Ring Assemblies Configured for Pressure Locking
Linear Motor System
Application:
62/702,860 →
Linear Bearing System for a Motor
Application:
62/703,338 →
Related Assignments
(24)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 26, 2011
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 025700/0199 →
Assignment of Assignor's Interest
Jun 8, 2011
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 026412/0019 →
Assignment of Assignor's Interest
Jan 4, 2012
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 027480/0272 →
Assignment of Assignor's Interest
Feb 9, 2012
From: LAWLER, JOHN; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 027681/0570 →
Assignment of Assignor's Interest
Feb 9, 2012
From: LAWLER, JOHN; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 027681/0613 →
Assignment of Assignor's Interest
Feb 9, 2012
From: SVRCEK, MATT; LAWLER, JOHN; MILLER, SHANNON
To: ETAGEN, INC.
Reel/Frame 027681/0530 →
Assignment of Assignor's Interest
Feb 9, 2012
From: LAWLER, JOHN; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 027681/0545 →
Assignment of Assignor's Interest
Apr 10, 2012
From: GADDA, CHRISTOPHER DAVID
To: ETAGEN, INC.
Reel/Frame 028020/0052 →
Assignment of Assignor's Interest
Nov 6, 2013
From: LAWLER, JOHN; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 031557/0417 →
Assignment of Assignor's Interest
Nov 6, 2013
From: LAWLER, JOHN; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 031557/0692 →
Assignment of Assignor's Interest
Nov 6, 2013
From: GADDA, CHRISTOPHER DAVID
To: ETAGEN, INC.
Reel/Frame 031557/0773 →
Assignment of Assignor's Interest
Nov 6, 2013
From: SVRCEK, MATT; LAWLER, JOHN
To: ETAGEN, INC.
Reel/Frame 031557/0567 →
Assignment of Assignor's Interest
Nov 6, 2013
From: SVRCEK, MATT; LAWLER, JOHN; MILLER, SHANNON
To: ETAGEN, INC.
Reel/Frame 031557/0627 →
Assignment of Assignor's Interest
Oct 14, 2016
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 040022/0976 →
Assignment of Assignor's Interest
Jun 18, 2018
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 046120/0988 →
Nunc Pro Tunc Assignment
Nov 8, 2018
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 047454/0437 →
Nunc Pro Tunc Assignment
Nov 8, 2018
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 047454/0408 →
Nunc Pro Tunc Assignment
Nov 8, 2018
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 047454/0462 →
Nunc Pro Tunc Assignment
Nov 8, 2018
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 047454/0486 →
Nunc Pro Tunc Assignment
Nov 8, 2018
From: SIMPSON, ADAM; MILLER, SHANNON; SVRCEK, MATT
To: ETAGEN, INC.
Reel/Frame 047454/0509 →
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 071675/0697 →