Patent Assignment
Reel/Frame 006023/0388
Assignment of Assignors Interest.
Recorded: 1992-02-07
Pages: 3
Assignee
GEMTECH, INC.
MERCER ISLAND, WASHINGTON
Covered Property
(1)
High Performance Acoustical Cleaning Apparatus for Teeth
Patent:
5,378,153 →
Application:
07/832,422 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name
Jul 17, 1998
From: OPTIVA CORP.
To: OPTIVA CORPORATION
Reel/Frame 009314/0297 →
Notice of Grant of Secuirty Interest in Patents
Jul 17, 1998
From: OPTIVA CORPORATION
To: NATIONSBANK, N.A., AS AGENT
Reel/Frame 009314/0381 →
Change of Name
Jul 17, 1998
From: GEMTECH, INC.
To: OPTIVA CORP.
Reel/Frame 009314/0385 →
Change of Name
Sep 13, 1999
From: NATIONSBANK, NATIONAL ASSOCIATION
To: BANK OF AMERICA, NATIONAL ASSOCIATION
Reel/Frame 010216/0852 →
Change of Name
Jun 14, 2004
From: OPTIVA CORPORATION
To: PHILIPS ORAL HEALTHCARE, INC.
Reel/Frame 015442/0058 →
Change of Name
Jun 14, 2004
From: GEMTECH, INC.
To: OPTIVA CORPORATION
Reel/Frame 015442/0062 →