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. 22, 2008
Filed:
Oct. 29, 2003
Cherng-chyi Han, San Jose, CA (US);
Rod Lee, San Jose, CA (US);
Mao-min Chen, San Jose, CA (US);
Pokang Wang, San Jose, CA (US);
Cherng-Chyi Han, San Jose, CA (US);
Rod Lee, San Jose, CA (US);
Mao-Min Chen, San Jose, CA (US);
Pokang Wang, San Jose, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
Problems such as thermal pole tip protrusion result from thermal mismatch between the alumina and pole material during the writing process. This, and similar problems due to inadequate heat dissipation, have been overcome by dividing the bottom shield into two pieces both of which sit on top of a non-magnetic heat sink. Heat generated by the coil during writing is transferred to the non-magnetic heat sink whence it gets transferred to the substrate. With this approach, the head not only benefits from less field disturbance due to the small shield but also improves heat dissipation from the additional heat sink.