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:
Apr. 14, 1987
Filed:
Jul. 10, 1985
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-13 ; 264-14 ; 264 25 ; 264102 ; 264107 ; 4251744 ; 4254 / ; 425407 ; 425421 ; 425810 ;
Abstract
A press molding apparatus and its method of operation for making an information carrier disc which comprises the steps of maintaining a mass of granular transparent synthetic material in a vacuum, radiating heat from an infrared heating unit to plasticize the synthetic material, and press-molding the plasticized synthetic material.