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. 12, 1980
Filed:
Dec. 05, 1978
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
316 30 ; 427 64 ;
Abstract
Method of manufacturing a cathode tube and for a ventilator used in its baking process which eliminates the need for a pre-baking process, and polyvinyl-alcohol (PVA) in the phosphor coating and an acrylic resin layer are completely baked and decomposed during the process of the frit-sealing furnace. A ventilator is used in its baking process. The panel portion and a funnel portion are placed in a frit-sealing furnace with a mutually coupled condition so that both portions are frit-sealed and the phosphor is baked. A bulb formed of the panel and funnel portions is provided with a ventilator means to carry out the baking operation.