Patents by Inventor Etsu Den

Etsu Den 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).

  • Data protection program and data protection method
    Patent number: 7487366
    Abstract: A data protection program is able to effectively restrict an unauthorized access to a resource to be protected even when the resource to be protected is in a state legitimately accessed by a user. The identification information about a program capable of accessing the resource to be protected is registered in an access permission management table. If an access request to access the resource to be protected is subsequently received, then identification information about a request source program which has outputted the access request is acquired. Then, it is determined whether access to the resource to be protected is permitted or not based on whether the identification information about the request source program has been registered in the access permission management table or not. If access to the resource to be protected is permitted, data in the resource to be protected is processed in response to the access request.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: February 3, 2009
    Assignee: Fujitsu Limited
    Inventors: Yuu Umebayashi, Etsu Den, Yusuke Yamanaka, Takaoki Sasaki
  • Data protection program and data protection method
    Publication number: 20040010701
    Abstract: A data protection program is able to effectively restrict an unauthorized access to a resource to be protected even when the resource to be protected is in a state legitimately accessed by a user. The identification information about a program capable of accessing the resource to be protected is registered in an access permission management table. If an access request to access the resource to be protected is subsequently received, then identification information about a request source program which has outputted the access request is acquired. Then, it is determined whether access to the resource to be protected is permitted or not based on whether the identification information about the request source program has been registered in the access permission management table or not. If access to the resource to be protected is permitted, data in the resource to be protected is processed in response to the access request.
    Type: Application
    Filed: April 9, 2003
    Publication date: January 15, 2004
    Applicant: Fujitsu Limited
    Inventors: Yuu Umebayashi, Etsu Den, Yusuke Yamanaka, Takaoki Sasaki