Patents by Inventor Masato Yasutomi

Masato Yasutomi 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).

  • Method of restoring memory to a previous state by storing previous data whenever new data is stored
    Patent number: 6594781
    Abstract: A computer comprises a write monitor unit for monitoring a data write operation into an operating system file, an update data file for storing update data upon detection of a data write operation, an update-log file for storing the history information for the update data in the case where the update data is stored, and a read monitor unit for reading data from the update data file in the case where the history information for the data to be read from the operating system file is stored and reading data from the operating system file in the case where the history information is not stored.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: July 15, 2003
    Assignee: Fujitsu Limited
    Inventors: Toshio Komasaka, Chikayasu Bando, Masato Yasutomi, Takashi Miyamoto