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:
Jun. 27, 1989
Filed:
Dec. 16, 1985
Applicant:
Inventors:
Chiaki Kojima, Kanagawa, JP;
Hidetoshi Shimizu, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03H / ;
U.S. Cl.
CPC ...
430-1 ; 430-2 ; 430281 ; 430290 ; 522 23 ; 522 20 ; 522 79 ; 522 80 ; 522172 ;
Abstract
There is disclosed herein a hologram recording medium comprising of substrate formed of transparent and non-light scattering material having a plurality of open pores for said substrate and photopolymerization composition impregnated in said open pores. The photopolymerization composition consists essentially of a photopolymerizable monomer or oligomer which adheres to the surface of said open pores, a photopolymerization initiator and activator for controlling the photopolymerization speed.