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:
Dec. 26, 1995
Filed:
Sep. 07, 1994
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
There has been provided by the present invention a process for producing a single crystal of potassium niobate which comprises disposing a positive electrode directly or via a semi-insulating substance layer on one c-plane of a single crystal of potassium niobate and also a negative electrode via a semi-insulating substance layer on the other c-plane of the single crystal of potassium niobate, said positive and negative electrodes being disposed in mutually facing relationship, and applying voltage between the positive and negative electrodes so as to pole (convert to the single-domain state) the single crystal of potassium niobate, and which enables to pole the entire region of the single crystal of potassium niobate without quality deterioration.