SAE Magnetics and Headway Technologies Assigned Patent

SAE Magnetics, (H.K.) Ltd., Hong Kong, Hong Kong, and Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (10,566,013) developed by Honda, Takashi, Hosoi, Ryo, Chan, Wah Chun, Kawato, Makoto, Hong Kong, China, Zhou, Dayu, Shimazawa, Koji, and Liu, Kowang, Milpitas, CA, for a “semiconductor laser for thermally-assisted magnetic recording head.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A light source unit for thermally-assisted magnetic head includes a substrate member having a bonding surface, multiple layers formed on the bonding surface and comprising a base layer, a connection pad layer, an insulation layer and a bonding layer, a light source assembly attached on the bonding layer of the substrate member and having a laser diode embedded therein and connected to the connection pad layer on the bonding surface, so as to form a laser diode circuit, and a heater buried in the insulation layer and connected to the connection pad layer, so as to form a heater circuit. The light source unit can maintain stable heat power for facilitating performance of the thermally-assisted magnetic head, and further reduce the sizes of the light source unit and substrate member.”

The patent application was filed on January 17, 2019 (16/250,131).