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. 13, 1989
Filed:
Apr. 13, 1988
Applicant:
Inventor:
Watson R Henderson, Broomfield, CO (US);
Assignee:
Storage Technology Corporation, Louisville, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; B05D / ;
U.S. Cl.
CPC ...
427116 ; 29603 ; 427131 ; 360119 ;
Abstract
A process for fabricating a thin film magnetic head to achieve improved dimensions and tolerances of the pole tip portion of the head. A lower thin film magnetic layer comprising the lower pole tip is first formed followed by a thin layer defining the gap of the head. A thin film magnetic layer is then deposited only in the vicinity of the pole tip to define the upper pole of the head. Following this, successive layers of insulation and coils are deposited. Finally, a top thin film magnetic layer is deposited. This top layer contacts the already formed layer comprising the top pole piece.