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. 02, 1982
Filed:
May. 19, 1980
Akihiko Hosaka, Saku, JP;
Kiyotaka Okuyama, Saku, JP;
TDK Electronics Co., Ltd., Tokyo, JP;
Abstract
A magnetic recording medium is provided which satisfies electromagnetic conversion characteristics and typical physical properties such as bonding strength, repeated-passage stability, still-playback characteristics, etc. without unfavorably affecting the surface smoothness. The binder in the magnetic coating contains in combination specific proportions of three components, a polyurethane resin, an epoxy resin, and a nitrocellulose whose protective ingredient has been replaced by a vinyl chloride-vinyl acetate copolymer is used as a resin binder in magnetic coating material together with a polyisocyanate curing agent.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile