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:
Nov. 29, 1988
Filed:
Jan. 15, 1987
Applicant:
Inventors:
Helmut Barzynski, Bad Duerkheim, DE;
Herbert Naarmann, Wattenheim, DE;
Assignee:
BASF Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; G01D / ; H01M / ;
U.S. Cl.
CPC ...
3461351 ; 429213 ; 346 / ;
Abstract
In an optical recording medium of the reflection type, the light-absorbing layer contains polypyrrole as the light-absorbing substance.