Patent Assignment
Reel/Frame 042798/0277
Assignment of Assignor's Interest
Recorded: 2017-06-23
Pages: 8
Assignors
RAVENER, HENDRIK
Executed: 2017-03-23
WIKSTRÖM, TOBIAS
Executed: 2017-03-03
AMSTUTZ, HERMANN
Executed: 2017-03-03
MEIER, NORBERT
Executed: 2017-03-08
Assignee
ABB SCHWEIZ AG
BROWN BOVERI STRASSE 6, BADEN, 5400, SWITZERLAND
Covered Property
(1)
Turn-Off Power Semiconductor Device with Improved Centering and Fixing of a Gate Ring, and Method for Manufacturing the Same
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Mar 6, 2020
From: ABB SCHWEIZ AG
To: ABB POWER GRIDS SWITZERLAND AG
Reel/Frame 052916/0001 →
Change of Name
Dec 31, 2021
From: ABB POWER GRIDS SWITZERLAND AG
To: HITACHI ENERGY SWITZERLAND AG
Reel/Frame 058666/0540 →
Merger
Nov 13, 2023
From: HITACHI ENERGY SWITZERLAND AG
To: HITACHI ENERGY LTD
Reel/Frame 065549/0576 →