Patent Assignment
Reel/Frame 005190/0807
Nunc Pro Tunc Assignment October 4, 1988
Recorded: 1989-12-04
Pages: 1
Assignor
ADVANCED CONTROL ENGINEERING, INC.
Executed: 1989-11-20
Covered Property
(1)
Filter Pump Head Assembly
Patent:
4,690,621 →
Application:
06/852,221 →
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Apr 15, 1986
From: SWAIN, DANNY C.
To: ADVANCED CONTROL ENGINEERING
Reel/Frame 004546/0573 →
Assignment of Assignor's Interest
Feb 17, 1994
From: MILLIPORE CORPORATION
To: MILLIPORE INVESTMENT HOLDINGS LTD.
Reel/Frame 006862/0716 →
Merger
Aug 6, 2001
From: MILLIPORE INVESTMENT HOLDINGS LIMITED
To: MILLIPORE CORPORATION
Reel/Frame 012025/0799 →
Assignment of Assignor's Interest
Sep 14, 2001
From: MILLIPORE CORPORATION
To: MYKROLIS CORPORATION
Reel/Frame 012134/0787 →