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:
Aug. 16, 2005
Filed:
Feb. 05, 2002
Applicants:
Michael Stanimirov, Trimbach, CH;
Klaus Bohnert, Oberrohrdorf, CH;
Inventors:
Michael Stanimirov, Trimbach, CH;
Klaus Bohnert, Oberrohrdorf, CH;
Assignee:
ABB Research LTD, Zurich, CH;
Primary Examiner:
Int. Cl.
CPC ...
G01R031/00 ;
U.S. Cl.
CPC ...
Abstract
For measuring an electric voltage in an electro-optic voltage converter, polarized light of two wavelengths is sent through a medium. At the output side, the light is led through a polarizer and the remaining signal is measured. For compensating a temperature dependence of the electro-optic coefficients, the measured results at both wavelengths are compared, and the voltage value consistant with both measurements is used.