IP Library Assignment 012828/0025
Patent Assignment
Reel/Frame 012828/0025

Assignment of Assignor's Interest

Recorded: 2002-04-23 Pages: 3
Assignor
SPERANZA, A. JOHN
Executed: 2002-04-19
Assignee
PROTON ENERGY SYSTEMS, INC.
50 INWOOD ROAD, ROCKY HILL, CONNECTICUT, 06067
Covered Property (1)
Protonic Rate Level Sensing Device for an Electrolysis Cell
Patent: 6,723,220 →
Application: 10/127,968 →
Publication: US 2002/0153244
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Agreement Jun 8, 2007
From: PROTON ENERGY SYSTEMS, INC.
To: PERSEUS PARTNERS VII, L.P.
Reel/Frame 019399/0436 →