Patent Assignment
Reel/Frame 043994/0905
Assignment of Assignor's Interest
Recorded: 2017-10-31
Pages: 3
Assignors
LI, YOUYI
Executed: 2015-07-06
WANG, JIANPING
Executed: 2015-07-06
LIU, KAI
Executed: 2015-07-06
Assignee
ABB TECHNOLOGY LTD
AFFOLTERNSTRASSE 44, CH-8050 ZURICH, SWITZERLAND
Covered Property
(1)
Travelling Wave Pilot Protection Of A Transmission Line Based On Time Synchronization
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Oct 31, 2017
From: ABB TECHNOLOGY LTD
To: ABB SCHWEIZ AG
Reel/Frame 044341/0782 →
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 065548/0905 →