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:
May. 08, 1990
Filed:
Mar. 01, 1989
Applicant:
Inventors:
Gijsbertus De With, Eindhoven, NL;
Hendricus J Van Dijk, Eindhoven, NL;
Assignee:
U.S. Philips Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445 22 ; 264 65 ;
Abstract
A powder mixture of yttrium and aluminum sulfates is prepared and heated in a oxidizing atmosphere. Silicon and/or magnesium compounds are added during the powder mixture preparation, or after it is heated and the resulting garnet powder is molded into the shape of a discharge envelope. The molding is then sintered.