Patent Assignment
Reel/Frame 005263/0173
Assignment of Assignors Interest.
Recorded: 1990-03-19
Pages: 2
Assignor
UNITT, BRIAN M.
Executed: 1990-02-23
Assignee
STC PLC, A BRITISH COMPANY
1B PORTLAND PLACE, LONDON WIN 3AA, ENGLAND, UNITED KINGDOM
Covered Property
(1)
Fibre Optic Transmission System
Patent:
5,046,807 →
Application:
07/484,188 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 7, 1993
From: STC LIMITED
To: NORTHERN TELECOM LIMITED
Reel/Frame 006796/0981 →
Change of Name
Dec 23, 1999
From: NORTHERN TELECOM LIMITED
To: NORTEL NETWORKS CORPORATION
Reel/Frame 010567/0001 →
Change of Name
Aug 30, 2000
From: NORTEL NETWORKS CORPORATION
To: NORTEL NETWORKS LIMITED
Reel/Frame 011195/0706 →
Change of Name
Mar 10, 2010
From: STC PLC
To: STC LIMITED
Reel/Frame 024055/0577 →
Assignment of Assignor's Interest
Apr 9, 2010
From: NORTEL NETWORKS LIMITED
To: CIENA LUXEMBOURG S.A.R.L.
Reel/Frame 024213/0653 →
Assignment of Assignor's Interest
Apr 19, 2010
From: CIENA LUXEMBOURG S.A.R.L.
To: CIENA CORPORATION
Reel/Frame 024252/0060 →