Patents by Inventor John Richard Clarke

John Richard Clarke 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).

  • Restricted data access
    Publication number: 20020138747
    Abstract: A data storage medium 10 adapted to restrict access to data 20 stored thereupon by encrypting control login 18, 22 which directs storage devices 62, 64 where to look for the data 20 on the storage medium 10 and a method for providing such a storage medium 10.
    Type: Application
    Filed: March 20, 2002
    Publication date: September 26, 2002
    Inventor: John Richard Clarke
  • Device and method for data timestamping
    Publication number: 20020120851
    Abstract: A storage device includes a trusted clock, a memory, a time-stamper and a digital signer. The device is adapted to store to the memory data that has been time-stamped by the time-stamper, with a time obtained from the trusted clock, and digitally signed with a digital signature by the digital signer.
    Type: Application
    Filed: February 13, 2002
    Publication date: August 29, 2002
    Inventor: John Richard Clarke
  • Data storage system having redundant solid state data storage device
    Publication number: 20010018728
    Abstract: A RAID device is provided with a pair of non-volatile solid state data storage devices and one or more rotating disk drives, giving improved access time performance to the array. Data is staged on the pair of solid state data storage devices, and periodically backed up to the rotating disk drive(s).
    Type: Application
    Filed: February 23, 2001
    Publication date: August 30, 2001
    Applicant: HEWLETT-PACKARD COMPANY
    Inventors: Andrew Topham, John Richard Clarke