Patent Assignment
Reel/Frame 052873/0856
Assignment of Assignor's Interest
Recorded: 2020-06-08
Pages: 7
Assignors
LIU, KAI
Executed: 2019-04-24
WANG, JIANPING
Executed: 2019-05-02
LI, YOUYI
Executed: 2019-05-02
Assignee
ABB SCHWEIZ AG
BRUGGERSTRASSE 66, BADEN, 5400, SWITZERLAND
Covered Property
(1)
Method for Detecting Fault in Power Transmission Line and Protection System Using the Same
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Mar 15, 2021
From: ABB SCHWEIZ AG
To: ABB POWER GRIDS SWITZERLAND AG
Reel/Frame 055585/0670 →
Change of Name
Dec 31, 2021
From: ABB POWER GRIDS SWITZERLAND AG
To: HITACHI ENERGY SWITZERLAND AG
Reel/Frame 058601/0692 →
Merger
Nov 13, 2023
From: HITACHI ENERGY SWITZERLAND AG
To: HITACHI ENERGY LTD
Reel/Frame 065548/0905 →