Patent Assignment
Reel/Frame 020799/0603
Assignment of Assignor's Interest
Recorded: 2008-04-08
Pages: 4
Assignor
PRENGAMAN, DAVID R.
Executed: 2008-03-31
Assignee
RSR TECHNOLOGIES
2804 SEA HARBOR ROAD, DALLAS, TEXAS, 75212
Covered Property
(1)
Lead-Tin-Silver-Bismuth Containing Alloy for Positive Grid of Lead Acid Batteries
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 8, 2008
From: FLEMING, FRANK ALBERT
To: NORTHSTAR BATTERY COMPANY, LLC
Reel/Frame 020799/0567 →
Security Interest
Jan 18, 2017
From: NORTHSTAR BATTERY COMPANY, LLC
To: INTERTRUST (SWEDEN) AB
Reel/Frame 041007/0478 →
Release of Security Interest
Oct 3, 2019
From: INTERTRUST (SWEDEN) AB
To: NORTHSTAR BATTERY COMPANY, LLC
Reel/Frame 050613/0900 →
Change of Name
Dec 5, 2025
From: RSR TECHNOLOGIES, INC.
To: ECOBAT SOLUTIONS, INC.
Reel/Frame 073868/0711 →
Change of Name
Dec 5, 2025
From: ECOBAT SOLUTIONS, INC.
To: ECOBAT SOLUTIONS, LLC
Reel/Frame 073868/0819 →