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:
Feb. 25, 1992
Filed:
Aug. 23, 1989
Applicant:
Inventor:
Fumio Goto, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4274301 ; 427131 ; 427205 ; 427435 ; 427436 ;
Abstract
An improved magnetic disc member for use in a magnetic disc device, said member comprising a base plate, a number of fine noble metal particles adhered to a surface thereof to form microprotuberances and a nonmagnetic layer coated further thereon; the surface roughness of the member being controlled by changing a thickness of the nonmagnetic layer.
Goto, Fumio. (1992). Magnetic disc member and process for manufacturing the same (U.S. Patent No. 5091225). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5091225
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile