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:
Jan. 13, 1998
Filed:
May. 30, 1995
Applicant:
Inventors:
Michael-Joachim Brekner, Frankfurt am Main, DE;
Egon Hellstern, Waldems-Niederems, DE;
Christoph Weber, Dreieich, DE;
Assignee:
Ticona GmbH, Kelsterbach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; B32B / ;
U.S. Cl.
CPC ...
428332 ; 428336 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 428900 ; 526127 ; 526132 ; 526160 ; 526281 ; 526283 ; 526308 ; 427127 ; 427128 ; 427129 ;
Abstract
A magneto-optical recording medium containing a substrate formed from polymers which are prepared by polymerization without ring cleavage, of monomers comprising polycyclic olefins, such as norbornene, results in a recording medium having increased thermal dimensional stability and resistance to hydrolysis, and decreased moisture absorption and birefringence.