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:
May. 28, 1996
Filed:
Apr. 24, 1995
Applicant:
Inventors:
Ming M Yang, San Jose, CA (US);
James L Chao, Milpitas, CA (US);
Michael A Russak, Los Gatos, CA (US);
Assignee:
HMT Technology Corporation, Fremont, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428 655 ; 428156 ; 428 666 ; 428336 ; 4286 / ; 4286 / ; 428900 ; 360135 ;
Abstract
An improvement in a magnetic recording disc having a protective overcoat is described. The overcoat extends between an inner-diameter landing zone and a data zone and has a thickness in the landing zone of at least 135 .ANG. and a thickness in the data zone of less than 90 .ANG..