Patents by Inventor David Brandman

David Brandman 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).

  • Write protection in a storage system allowing both file-level access and volume-level access
    Patent number: 7558930
    Abstract: A method for write protection in a storage system using both the “file-level WORM function” and the “block-level WORM function”. The block-level WORM function has two modes: the first mode is to prohibit both file access and block access, and the second mode is to prohibit block access only. When a user uses the file-level WORM function to prohibit write access to a file in a volume, a file access invokes the first mode of the block-level WORM function to prohibit write access to the volume where the write prohibited file resides.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: July 7, 2009
    Assignees: Hitachi, Ltd., Hitachi Data Systems Corporation
    Inventors: Manabu Kitamura, David Brandman
  • Write protection in a storage system allowing both file-level access and volume-level access
    Publication number: 20070022259
    Abstract: A method for write protection in a storage system using both the “file-level WORM function” and the “block-level WORM function”. The block-level WORM function has two modes: the first mode is to prohibit both file access and block access, and the second mode is to prohibit block access only. When a user uses the file-level WORM function to prohibit write access to a file in a volume, a file access invokes the first mode of the block-level WORM function to prohibit write access to the volume where the write prohibited file resides.
    Type: Application
    Filed: July 25, 2005
    Publication date: January 25, 2007
    Inventors: Manabu Kitamura, David Brandman