The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2012
Filed:
Jun. 28, 2010
Olof Hjortstam, Vasteras, SE;
Rongsheng Liu, Vasteras, SE;
Albert Jaksts, Vasteras, SE;
Gunilla Eken, Legal Representative, Vasteras, SE;
Leif A. Pettersson, Vasteras, SE;
Olof Hjortstam, Vasteras, SE;
Rongsheng Liu, Vasteras, SE;
Albert Jaksts, Vasteras, SE;
Gunilla Eken, legal representative, Vasteras, SE;
Leif A. Pettersson, Vasteras, SE;
ABB Research Ltd., , CH;
Abstract
An electric insulation material for an electric device includes one or several electrical conductors and an electric insulation material arranged around the conductor or between the conductors, which insulation material is impregnated with a dielectric insulation liquid. The electric insulation material includes a main layer that is provided with a surface layer that has a dielectric constant that is lower than the dielectric constant of the main layer.