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:
Dec. 11, 1990
Filed:
Sep. 14, 1989
Takuo Fujino, Akishima, JP;
Hoya Corporation, Tokyo, JP;
Abstract
According to the present process for producing a molded glass article, the surface of a lead oxide-containing glass material to be press molded is subjected in advance to an oxidation treatment with activated oxygen ion; thereby, there takes place no reduction reaction of lead oxide at the glass surface, at the time of press molding of the glass material, and there can be obtained a molded glass article with a clear surface. Further, there occurs no adhesion of lead to the surface of the mold used, and consequently the mold life is extended, which is very economical.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile