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.:

US 8035920 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 11, 2011

Filed:

Dec. 06, 2007
Applicants:

Kyoung-won NA, Seoul, KR;

Kook-hyun Sunwoo, Hwaseong-si, KR;

Joo-ho Lee, Seoul, KR;

Jae-chul Shim, Yongin-si, KR;

Inventors:

Kyoung-won Na, Seoul, KR;

Kook-hyun Sunwoo, Hwaseong-si, KR;

Joo-ho Lee, Seoul, KR;

Jae-chul Shim, Yongin-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/17 (2006.01); G11B 5/39 (2006.01);
U.S. Cl.
CPC ...
Abstract

A perpendicular magnetic recording head and a method of manufacturing the same are provided. The perpendicular magnetic recording head that includes a main pole, a return yoke, and coils that surround upper and lower parts of the main pole in a solenoid shape so that the main pole generates a magnetic field for recording information onto a recording medium, wherein a portion of the coils that pass above the main pole comprises a plurality of first coils and at least one second coil having a cross-sectional shape different from that of the first coils, and the second coil is formed across upper regions of two first coils adjacent to each other among the first coils.


Find Patent Forward Citations

Na, Kyoung-won. (2011). Perpendicular magnetic recording head having coil portions above a main pole and provided with different cross-sectional shapes and method of manufacturing the same (U.S. Patent No. 8035920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8035920

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