Headway Technologies Assigned Patent

Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (12094497) developed by Sayed; Shehrin, Fremont, CA, Chen; Wenyu, San Jose, CA, Liu; Yue, Liu; Kowang, Fremont, CA, Roppongi; Tetsuya, San Jose, CA, Ren; Haowen, Fremont, CA, Tang; Yuhui, Milpitas, CA, Dovek; Moris Musa, San Jose, CA, and Chen; Wenjie, Cupertino, CA, for “optimizing a current distribution in write heads for efficient energy-assisted magnetic recording.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The present embodiments can generally provide a magnetic write head structure with optimized gap current distribution to maximize the current-assisted areal density capacity (ADC) gain in hard-disk-drive storage devices. In a first example embodiment, a non-dual-write-shield (nDWS) write head can include a main pole (MP), a trailing shield (TS), and a write gap (WG) disposed between the MP and the TS. The write head can also include a side shield (SS), a leading shield (LS), and a write shield (WS). The write head can include a side gap (SG) between the MP and the SS on both sides of the MP tip, and a leading gap (LG) between the MP and the LS. The write head can also include a coil wrapped around the MP through a PP3 shield that is configured to direct a time-dependent write current to saturate magnetization of the MP.”

The patent application was filed on 2023-08-30 (18/240250).