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:
Nov. 19, 1985
Filed:
Oct. 28, 1983
Richard D Faulkner, Lancaster, PA (US);
James L Rhoads, Lancaster, PA (US);
RCA Corporation, Princeton, NJ (US);
Abstract
An improved electron discharge device comprises an evacuated envelope having at least one alumina ceramic insulator member. Within the device is a source of electrons, and an electron multiplier assembly including an anode. A high resistance material is diffused into the ceramic insulator to reduce luminescence within the insulator. The method of diffusion includes the steps of applying an opaque coating of a high resistance material to a surface of the ceramic insulator member and then firing the member in a reducing atmosphere at a temperature within the range of about 1500.degree. C. to 1550.degree. C. until the high resistance material diffuses into the surface of the member forming a diffusion region.