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:
Jun. 02, 1992
Filed:
Apr. 16, 1990
Tsuyoshi Ohkubo, Hachioji, JP;
Mayumi Kageyama, Akishima, JP;
Reisuke Okada, Nishitama, JP;
Takeyuki Sawamoto, Suginami, JP;
Hoya Corporation, Tokyo, JP;
Abstract
The present invention relates to a substrate for information-recording media, which is formed of a polymer containing a specific acrylate-based monomer as an essential component. Since the acrylate-based monomer has a rigid skeleton similar to that of bisphenol A, the substrate for recording media, formed of the polymer of such a monomer, has high hardness and excellent heat resistance. Further, due to six fluorine atoms that the acrylate-based monomer contains, the substrate has advantages of low water absorptivity and easy die removability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile