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:
Aug. 18, 1992
Filed:
Mar. 08, 1990
Applicant:
Inventors:
Palaiyur S Kalyanaraman, Fanwood, NJ (US);
Harris A Goldberg, Colonia, NJ (US);
Frank J Onorato, Phillipsburg, NJ (US);
Assignee:
Hoechst Celanese Corp., Somerville, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428913 ; 428333 ; 430945 ; 369288 ; 346 / ; 3461351 ;
Abstract
Provided is an optical information medium comprised of an organic information layer and a resinous continuous film overcoat layer which is coated over said organic information layer. The resinous overcoat layer is no thicker than, and most preferably thinner than said information layer, and is of a thickness of about 100 angstroms or less. It is most preferred that the overcoat layer is comprised of a water soluble polymer. The resulting optical information medium advantageously exhibits an extremely sharp threshold for marking, as well as improved carrier to noise ratio.