Patent Assignment
Reel/Frame 025745/0698
Assignment of Assignor's Interest
Recorded: 2011-02-04
Pages: 4
Assignors
SU, BIN
Executed: 2010-12-31
JING, LEI
Executed: 2010-12-28
LIU, QIANJIN
Executed: 2010-12-31
Assignee
ABB RESEARCH LTD.
AFFOLTERNSTRASSE 44, ZURICH, CH-8050, SWITZERLAND
Covered Property
(1)
Fast Power Swing Unblocking Method and Apparatus for Distance Protection in Power System
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 →