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. 22, 1990
Filed:
Dec. 16, 1988
Applicant:
Inventors:
Seiichiro Manabe, Osaka, JP;
Yukihito Nagashima, Osaka, JP;
Assignee:
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65347 ; 65DI / ; 373 27 ; 373134 ;
Abstract
A vertical glass melting furnace provided with a material entrance at the uppermost portion and a molten glass exit provided at the lowermost portion. A resistance heating element 6 is provided over the substantially entire part of the horizontal section of the furnace at at least one level which is immersed in the molten glass.