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:
Jan. 20, 2004
Filed:
Jun. 26, 2000
Applicant:
Inventors:
Koichi Terunuma, Chuo-ku, JP;
Tetsuya Mino, Chuo-ku, JP;
Katsuya Kanakubo, Chuo-ku, JP;
Noriyuki Ito, Chuo-ku, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/127 ; H04R 3/100 ;
U.S. Cl.
CPC ...
G11B 5/127 ; H04R 3/100 ;
Abstract
The invention is a method of manufacturing thin film magnetic heads usable for magnetic recording and reproducing drive devices such as magnetic disk drive devices. The method is characterized by forming a first magnetic film in a primary pattern which is larger than its definitive pattern and of which its edges are located within frames which are used in a frame-plating method for a second magnetic film. The second magnetic film is then formed by the frame-plating method and the first magnetic film is etched into its definitive pattern by using the second magnetic film as a mask.