IBM and National University of Singapore Assigned Patent

International Business Machines, Corporation, Armonk, NY, and National University of Singapore, Singapore, has been assigned a patent (9,418,692) developed by Bhatia, Charanjit Singh, Pandey, Koashal Kishor Mani, Gaur, Nikita, Singapore, Singapore, Maurer, Siegfried L., Stormville, NY, and Nunes, Ronald W., East Falmouth, MA, for a “method of fabricating graded media.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic data storage medium includes an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy. The medium also includes an ion-doped overcoat having an ion density that is at a maximum substantially at the interface with the recording layer and has a continuous grading of ion density between the overcoat and the recording layer. The coercivity is at a minimum substantially at the interface.“

The patent application was filed on October 9, 2014 (14/510,580).