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:
Jul. 28, 1987
Filed:
Jul. 24, 1986
Applicant:
Inventors:
Katsuhiko Hata, Aichi, JP;
Hisao Ohashi, Aichi, JP;
Keiji Honda, Aichi, JP;
Takahiko Yamakami, Aichi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445-5 ;
Abstract
A method of manufacturing a cathode ray tube wherein DC and AC voltages are superimposed and applied to a cathode ray tube between a high voltage electrode and a low voltage electrode with the high voltage electrode being at the high voltage side of the DC voltage so as to perform knocking treatment. The superimposed DC and AC voltages may be alternately applied in various manners so as to provide improved knocking of the tube.