Patent Assignment
Reel/Frame 022602/0312
Assignment of Assignor's Interest
Recorded: 2009-04-28
Pages: 3
Assignor
KOPTA, ARNOST
Executed: 2009-04-09
Assignee
ABB TECHNOLOGY AG
AFFOLTERNSTRASSE 44, ZURICH, CH-8050, SWITZERLAND
Covered Property
(1)
Power Semiconductor Device with a Reduced Dynamic Avalanche Effect and Subsequent Local Heating
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Nov 15, 2016
From: ABB TECHNOLOGY LTD.
To: ABB SCHWEIZ AG
Reel/Frame 040620/0939 →
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 →
Corrective Assignment to Correct the Conveying Party "Abb Technology Ltd." Should Read "Abb Technology Ag" Previously Recorded at Reel: 040620 Frame: 0939. Assignor(S) Hereby Confirms the Merger.
May 10, 2022
From: ABB TECHNOLOGY AG
To: ABB SCHWEIZ AG
Reel/Frame 059940/0873 →
Merger
Nov 13, 2023
From: HITACHI ENERGY SWITZERLAND AG
To: HITACHI ENERGY LTD
Reel/Frame 065549/0576 →