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. 28, 1989
Filed:
Jan. 06, 1988
Applicant:
Inventors:
Akira Kisoda, Moriguchi, JP;
Hiroshi Suzuki, Kadoma, JP;
Tomiharu Hosaka, Yawata, JP;
Masanaru Hasegawa, Yawata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; B05D / ;
U.S. Cl.
CPC ...
427130 ; 427128 ;
Abstract
By polishing a surface of a magnetic layer of magnetic recording medium in a direction which coincides with a track angle defined during the recording and reproducing thereof, drop out is decreased and electromagnetic characteristics are improved.