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. 08, 1993
Filed:
May. 08, 1991
James R Peterson, Eden Prairie, MN (US);
Johannes F De Proost, Einhoven, NL;
Gerardus H Somers, Eindhoven, NL;
Franciscus A Pronk, Eindhoven, NL;
Victor Zieren, Eindhoven, NL;
Helmut J Gassen, Einhoven, NL;
Johannes H Franssen, Eindhoven, NL;
Rudolf A Van Doorn, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
For a tape contact face to be formed in a thin-film magnetic head having at least one transducing element, by removing material, a reference plane (29) corresponding to the tape contact face is detected by means of a plurality of markers (27A-27J) juxtaposed in a layer and extending transversely to the tape contact face, which markers have first end portions (27A1-27J1) pointing in one direction and second, spatially separated end portions (27A2-27J2) pointing in an opposite direction, with the second end portions located at different distances from the reference plane, inclined with respect to the reference plane, and adjoining each other steplessly.