Patents by Inventor Adrianus Djohan

Adrianus Djohan 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 and apparatus for data protection on embedded flash devices during power loss events
    Patent number: 9588565
    Abstract: Example embodiments of the present invention relate to a method, an apparatus, and a computer program product for providing secondary power to allow shutdown of a device during a power loss. The method includes monitoring an input power attribute for a data storage device. Upon detection of an anomaly in the input power attribute for the data storage device indicative of a power loss, the method includes providing secondary power to the data storage device for temporary operation of the device to power down.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 7, 2017
    Assignee: EMC IP Holding Company LLC
    Inventors: Jason A. Harland, Joseph E. Fenton, Adrianus Djohan, Paul F. Provost
  • Memory interconnect arrangement having high data transfer speed signal integrity
    Patent number: 9155194
    Abstract: An arrangement having a processor electrically to, and mounted on, a portion of a surface of a motherboard. A plurality of memory cards is plugged into memory board slot type connectors on a surface of the memory card printed circuit board with the surface of the memory card printed circuit board being perpendicular to the surface of the motherboard. A right angle backplane connector has a first end disposed perpendicular to, and electrically connected to the surface of a motherboard and a second end disposed on the surface of, and electrically connected to, the memory card printed circuit board. The plurality of memory cards is parallel to the surface of the motherboard. An ejector mechanism is provided for removing the memory printed circuit board from an electrical connector receptacle mounted to the motherboard by camming action.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: October 6, 2015
    Assignee: EMC Corporation
    Inventors: Kenneth M. Sullivan, Adrianus Djohan, Jonathan C. Giffen, Lawrence J. Feroli, John Phinney, Kranti Uppala
  • Field serviceable IT system
    Patent number: 9026708
    Abstract: A field serviceable IT system includes an IT enclosure. A first connector assembly is positioned within the IT enclosure. At least one I/O module is releasably coupled to the first connector assembly and positioned within the IT enclosure. A disk subsystem is releasably coupled to the at least one I/O module and positioned within the IT enclosure. At least one disk drive assembly is releasably coupled to the disk subsystem and positioned within the IT enclosure. A system board is releasably coupled to the first connector assembly and positioned within the IT enclosure. The system board is configured to be removable from the IT enclosure without first removing the at least one I/O module or the at least one disk drive assembly from the IT enclosure.
    Type: Grant
    Filed: March 31, 2012
    Date of Patent: May 5, 2015
    Assignee: EMC Corporation
    Inventors: Joseph E. Fenton, Adrianus Djohan, Jason A. Harland