Patents by Inventor Michael W. Wortman

Michael W. Wortman 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).

  • Patent number: 6978284
    Abstract: A system and method for designating and deleting expired files includes a means for storing expiration dates along with file identification data maintained by the file system. An earliest expiration date is stored in data maintained by the file system pertaining to each directory. In this manner, a check of the directory data indicates whether one or more expired files exist in the directory. The system date is compared to the earliest expiration date for a directory, for example when a “list contents of directory” command is received. If the earliest expiration date is earlier than the system date then a comparison is made with the files in the directory and individual files with expiration dates earlier than the current date are deleted. The earliest expiration date is then update to the correspond to the next earliest expiration date falling after the current date.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 20, 2005
    Assignee: International Business Machines Corporation
    Inventors: Gerald Francis McBrearty, Johnny Meng-Han Shieh, Vi Trieu Tran, Michael W. Wortman
  • Publication number: 20030182332
    Abstract: A system and method for designating and deleting expired files includes a means for storing expiration dates along with file identification data maintained by the file system. An earliest expiration date is stored in data maintained by the file system pertaining to each directory. In this manner, a check of the directory data indicates whether one or more expired files exist in the directory. The system date is compared to the earliest expiration date for a directory, for example when a “list contents of directory” command is received. If the earliest expiration date is earlier than the system date then a comparison is made with the files in the directory and individual files with expiration dates earlier than the current date are deleted. The earliest expiration date is then update to the correspond to the next earliest expiration date falling after the current date.
    Type: Application
    Filed: March 21, 2002
    Publication date: September 25, 2003
    Applicant: International Business Machines Corporation
    Inventors: Gerald Francis McBrearty, Johnny Meng-Han Shieh, Vi Trieu Tran, Michael W. Wortman