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. 10, 1985
Filed:
Nov. 03, 1982
Applicant:
Inventors:
Masaharu Kanto, Hyogo, JP;
Hisato Kihara, Hyogo, JP;
Koichi Teshima, Tokyo, JP;
Michihiko Inaba, Kawasaki, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313402 ; 313407 ;
Abstract
A color cathode ray tube having a mask frame, a shadow mask attached to the mask frame and inner shield attached to the mask frame. At least one of these parts is made substantially of iron (Fe) and has a oxidized layer on its surface. That part further includes silicon (Si), aluminum (Al) and chromium (Cr) as impurity elements in weight amounts satisfying the following relation:
Kanto, Masaharu. (1985). Color cathode ray tube with frame, mask or shield having an oxidized (U.S. Patent No. 4558252). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4558252
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile