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:
Dec. 23, 2008
Filed:
Mar. 20, 2007
Christian Rene Bonhote, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Neil Leslie Robertson, Palo Alto, CA (US);
Petrus Antonius Van Der Heijden, San Jose, CA (US);
Christian Rene Bonhote, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Neil Leslie Robertson, Palo Alto, CA (US);
Petrus Antonius Van Der Heijden, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method of manufacturing a magnetic write head for perpendicular magnetic recording. The method includes the formation of a write pole over a substrate. A non-magnetic side gap layer is deposited and an ion milling is used to remove a portion of the substrate to lower the floor of the substrate. A sacrificial fill layer can then be deposited. A chemical mechanical polishing process can be used to remove the mask structure remaining as a remnant of the formation of the write pole, and then the sacrificial fill layer can be removed. A non-magnetic, electrically conductive material can be deposited to form a tailing gap, an a magnetic material can then be deposited to form a wrap around trailing shield.