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:
Jan. 13, 1976
Filed:
Jun. 05, 1974
Joseph John Piascinski, Leola, PA (US);
RCA Corporation, New York, NY (US);
Abstract
In the method of making a cathode-ray tube comprising a luminescent-viewing-screen structure including an aluminum metal layer in contact with a layer of carbon particles, the steps soon after the faceplate panel is heat sealed to the funnel, of flushing the still-hot assembly with a dry noncontaminating gas, such as nitrogen or air, then cooling the assembly to room temperature and then reflushing the assembly with a dry noncontaminating gas, and then capping the assembly with a temporary closure. The assembly so conditioned can be held or stored for a relatively long term between the heat sealing step and the subsequent manufacturing steps without degradation of the conductivity or reflectivity of the aluminum metal layer.