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:
Sep. 16, 1986
Filed:
Apr. 17, 1984
Applicant:
Inventor:
Yutaka Taniguchi, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264-15 ; 264162 ; 264230 ; 264339 ; 425D / ;
Abstract
A front end portion of a flat plate-like transparent thermoplastic material is grasped as bent so that the middle section thereof is convex. The thermoplastic material is heated and softened, and the rear end portion of the thermoplastic material is rounded cylindrically in the same direction as the bending direction of the front end portion. The thermoplastic material is then allowed to cool gradually, so that the front end portion has a flat plate-like shape after the gradual cooling. The cylindrical rear end portion is cut and the cut face is planished.