Patents by Inventor Elias Johnson

Elias Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High speed glide test for screening magnetic disc micro-waviness and a system therefor
    Publication number: 20050022586
    Abstract: A system and a method for measuring micro-waviness of a magnetic recording disk using a high-speed glide test are disclosed. The HSG test is a viable production-level test methodology for high performance media that require well-controlled and low micro-waviness.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 3, 2005
    Inventors: Yong Hu, Eric Dahlin, Shih-Fu Lee, Hamid Ghazvini, Elias Johnson