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:
Apr. 24, 2001
Filed:
Dec. 17, 1997
Applicant:
Inventors:
Takashi Tamura, Miyagi, JP;
Yukari Nihei, Miyagi, JP;
Atsushi Suzuki, Miyagi, JP;
Toru Matsunaga, Miyagi, JP;
Akira Urai, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/127 ;
U.S. Cl.
CPC ...
G11B 5/127 ;
Abstract
A magnetic head having excellent abrasion characteristics and a high playback output. The magnetic head is made up of a pair of magnetic core halves each having a single crystal ferrite at a portion thereof, said magnetic core halves being abutted and joined to each other, with a magnetic gap being formed between abutment surfaces of these magnetic core halves. The single crystal ferrite has its medium sliding surface, slidingly contacted with a magnetic recording medium, as a (411) plane, and also has the abutment surface as a (122) plane.