Varian Semiconductor Equipment Associates (Applied Materials) Assigned Patent

Varian Semiconductor Equipment Associates, Inc., Gloucester, MA, acquired by Applied Materials, Inc. in 2011, has been assigned a patent (8,830,616) developed by three co-inventors for a “magnetic storage device.”

The co-inventors are Alexander C. Kontos, Beverly, MA, Frank Sinclair, Quincy, MA, and Rajesh Dorai, Woburn, MA.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A write head for a magnetic storage device includes a writing tip comprising a magnetic material, a write pulse generator configured to generate a write pulse signal comprising a varying voltage bias between the magnetic storage device and the writing tip. The write pulse signal comprising one or more write pulses effective to tunnel electrons from the writing tip to the magnetic storage device. The data stream generator configured to provide a data stream signal to the writing tip where the data stream signal is operative to vary spin polarity in the electrons from a first polarity to a second polarity.”

The patent application was filed on Dec. 4, 2012 (13/693,152).