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:
Feb. 10, 1976
Filed:
Sep. 26, 1973
Applicant:
Inventors:
Yoshito Tsunoda, Tokyo, JA;
Yasutsugu Takeda, Kokubunji, JA;
Assignee:
Hitachi, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03H / ;
U.S. Cl.
CPC ...
350-35 ; 331 / ;
Abstract
A hologram device carrying at least one hologram on a light sensitive medium in which the part of the light sensitive medium which carries the hologram thereon is impregnated with a laser active material.