Patents by Inventor Sigeo Homma

Sigeo Homma 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).

  • Storage apparatus and method for optimal snapshot transfer
    Patent number: 7085901
    Abstract: A storage apparatus controls primary and secondary volumes as a pair, using a logical snapshot management table that indicates in which volume data to be accessed is retained to thereby enable an immediate access to a logical frozen image.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: August 1, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Sigeo Homma, Haruaki Watanabe, Yoichi Mizuno, Atsushi Tanaka
  • Storage apparatus and its management method
    Publication number: 20040168034
    Abstract: A storage apparatus controls primary and secondary volumes as a pair, using a logical snapshot management table that indicates in which volume data to be accessed is retained to thereby enable an immediate access to a logical frozen image.
    Type: Application
    Filed: July 25, 2003
    Publication date: August 26, 2004
    Applicant: HITACHI, LTD.
    Inventors: Sigeo Homma, Haruaki Watanabe, Yoichi Mizuno, Atsushi Tanaka