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:
Aug. 05, 2025
Filed:
Mar. 03, 2023
Headway Technologies, Inc., Milpitas, CA (US);
Yue Liu, Fremont, CA (US);
Moris Musa Dovek, San Jose, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
The present embodiments relate to a perpendicular magnetic recording (PMR) write head with a Two Tunable bias branch design that can electrical separate a WS1/PP3 and a SS/LS to form two tunable bias branches. A write head can include a main pole, a write gap(WG) disposed adjacent to the main pole, and a hot seed (HS) layer connected to the WG. The PMR write head can also include a trailing shield, a side shield and a leading shield. Two tunable bias branches can be formed to electrically separate the trailing shield and the side and leading shields. A first branch can include a first electrical path between the main pole and the trailing shield. The tunable bias branches can also include a second branch forming a second electrical path between the main pole and the side and leading shields.