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:
May. 02, 1978
Filed:
Feb. 21, 1973
Applicant:
Inventors:
Erwin Lind, Auringen, DT;
Dieter Messner, Wiesbaden-Biebrich, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
346158 ; 358300 ;
Abstract
A process for patterned storage and reproduction of information in which a photoconductive recording material is altered by an electron beam in correspondence with the information, a free charge is applied to the photoconductive recording material and the flowing off of this charge is made visible differing in correspondence with the pattern.