IP Library Assignment 024331/0278
Patent Assignment
Reel/Frame 024331/0278

Assignment of Assignor's Interest

Recorded: 2010-05-04 Pages: 2
Assignors
HJORTSBERG, ARNE
Executed: 2008-08-22
HAJEK, JAN
Executed: 2008-08-22
Assignee
ABB RESEARCH LTD.
AFFOLTERNSTRASSE 44, ZURICH, CH-8050, SWITZERLAND
Covered Property (1)
Oil Filled Transformer with Spacers and Spacers for Separating and Supporting Stacked Windings
Patent: 8,183,972 →
Application: 11/992,895 →
Publication: US 2011/0037551
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Mar 6, 2020
From: ABB SCHWEIZ AG
To: ABB POWER GRIDS SWITZERLAND AG
Reel/Frame 052916/0001 →
Merger Mar 30, 2020
From: ABB RESEARCH LTD.
To: ABB SCHWEIZ AG
Reel/Frame 052263/0200 →