Patent Assignment
Reel/Frame 029742/0263
Assignment of Assignor's Interest
Recorded: 2013-02-01
Pages: 10
Assignors
BERGGREN, BERTIL
Executed: 2012-12-10
MAJUMDER, RAJAT
Executed: 2013-01-02
SAO, CHARLES
Executed: 2013-01-22
LINDEN, KERSTIN
Executed: 2013-01-30
Assignee
ABB RESEARCH LTD
AFFOLTERNSTRASSE 44, ZURICH, CH-8050, SWITZERLAND
Covered Property
(1)
Method and Control Device for Controlling Power Flow Within a Dc Power Transmission Network
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Dec 26, 2019
From: ABB RESEARCH LTD.
To: ABB SCHWEIZ AG
Reel/Frame 051419/0309 →
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 →