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:
May. 31, 2022
Filed:
Nov. 20, 2020
Headway Technologies, Inc., Milpitas, CA (US);
Ying Liu, San Jose, CA (US);
Yuhui Tang, Milpitas, CA (US);
Yue Liu, Fremont, CA (US);
Jiun-Ting Lee, Sunnyvale, CA (US);
Shengyuan Wang, San Jose, CA (US);
Xiaomin Liu, Fremont, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A PMR (perpendicular magnetic recording) write head configured for thermally assisted magnetic recording (TAMR) and microwave assisted magnetic recording (MAMR) is made adaptive to writing at different frequencies by inserting thin layers of magnetic material into the material filling the side gaps (SG) between the magnetic pole (MP) and the side shields (SS). At high frequencies, the thin magnetic layers saturate and lower the magnetic potential of the bulky side shields.