SAE Magnetics and Headway Technologies Assigned Patent

SAE Magnetics (H.K.) Ltd., Shatin, Hong Kong, and Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (12387750) developed by Ngan; Siu Yin, San Jose, CA, Liu; Kowang, Fremont, CA, and Cha; Ellis, San Ramon, CA, for a “DFH heater design.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A PMR read/write transducer head configured for heat assisted recording (HAMR) includes thermally active nano-bumper pads formed from a thermally active bulge that protrudes proximally to each side of a read element to provide enhanced touchdown (TD) protection to the transducer head element where it emerges adjacent to the HAMR apparatus. The bumper pads, which can be multiple, are disposed about the transducer head and absorb heat energy generated by active heating elements, including the write current. Absorption of this energy causes the bulge to expand and vary its shape and protrude proximally outward from the slider ABS to protect the read/write head from both intentional and unanticipated touchdown events. The PMR read/write head is then mounted on a slider and the assembly is incorporated into a hard disk drive (HDD).”

The patent application was filed on 2024-06-10 (18/738431).