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. 21, 2002
Filed:
Sep. 23, 1999
Applicant:
Inventors:
Tsunehiko Sugawara, Chiba, JP;
Kentaro Tatsukoshi, Chiba, JP;
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 2/986 ;
U.S. Cl.
CPC ...
H01J 2/986 ;
Abstract
Stress concentration that causes at a central portion of side surfaces of a glass funnel body portion close to a sealed portion is restrained by providing concaves in diagonal portions of the glass funnel body portion, which have the highest rigidity.