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:
Jun. 01, 1993
Filed:
Nov. 28, 1989
Takao Kawamura, Chiba, JP;
Masaharu Kumada, Mobara, JP;
Hideo Tanabe, Mobara, JP;
Masaki Shinoda, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed is a shadow-mask type color cathode-ray tube comprising a faceplate having a curved inner surface which prevents degrouping and a substantially flat outer surface. In this color cathode-ray tube, the resolution is not deteriorated in the peripheral portion and an inespensive flat material is usable as a glass plate provided with a reflection reducing coating or a touch panel attached to the outer surface of the faceplate. Since a shadow mask supported with a tension applied thereto is usable, the positional deviation of the apertures due to the expansion of the shadow mask during operation is prevented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile