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. 23, 1997
Filed:
Jul. 28, 1994
Applicant:
Inventors:
Yoshinari Kashiwagi, Neyagawa, JP;
Makoto Umetani, Izumi, JP;
Hidenao Kataoka, Hirakata, JP;
Kenji Inoue, Nishinomiya, JP;
Shoji Nakamura, Hirakata, JP;
Satoru Morimoto, Tondabayashi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
653741 ; 6537411 ; 6537412 ; 6537413 ; 65286 ; 65 26 ; 249116 ; 249135 ; 425808 ;
Abstract
A die for press-molding glass optical elements which can press-mold glass optical elements having high melting points and various shapes repeatedly, which includes a base material having high strength on which a cutting layer having heat resistance and free cutting machinability is formed. After cutting the cutting layer into the desired shape with high accuracy, the die is coated with a surface protective film.