Patent Assignment
Reel/Frame 017449/0532
Assignment of Assignor's Interest
Recorded: 2006-04-06
Pages: 3
Assignors
KORBA, PETR
Executed: 2004-07-19
LARSSON, MATS
Executed: 2004-07-19
REHTANZ, CHRISTIAN
Executed: 2004-07-19
Assignee
ABB RESEARCH LTD.
AFFOLTERNSTRASSE 52, CH-8050 ZURICH, SWITZERLAND
Covered Property
(1)
Detecting Electromechanical Oscillations in Power Systems
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 2, 2004
From: KORBA, PETR; LARSSON, MATS; REHTANZ, CHRISTIAN
To: ABB RESEARCH LTD
Reel/Frame 015758/0492 →
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 →