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:
Feb. 12, 2008
Filed:
Dec. 12, 2002
Akira Murakami, Tokyo, JP;
Katsumi Utsugi, Tokyo, JP;
Yoshinori Iguchi, Tokyo, JP;
Masahiro Yoshida, Hidaka, JP;
Yoshikane Shinkuma, Tokyo, JP;
Atsushi Watabe, Tokyo, JP;
Akira Murakami, Tokyo, JP;
Katsumi Utsugi, Tokyo, JP;
Yoshinori Iguchi, Tokyo, JP;
Masahiro Yoshida, Hidaka, JP;
Yoshikane Shinkuma, Tokyo, JP;
Atsushi Watabe, Tokyo, JP;
Hoya Corporation, Tokyo, JP;
Abstract
A process for stably and efficiently producing quality glass articles such as preforms at high yields, and a process for producing an optical device from the preform obtained by the above process. In the process for producing a glass article, molten glass gobs having a predetermined weight each are poured, or molten glass drops having a predetermined weight each are dropped through a nozzle, into a boiling liquid having a boiling point lower than the class transition temperature of the glass constituting said glass article or a liquid which is temperature-adjusted beforehand so as to be caused to boil by the amount of heat of the glass, to form glass articles.