Patents by Inventor James Z. Guo

James Z. Guo 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: 7212328
    Abstract: An electron beam actuated light modulator, including an actuatable mirror element carried by a pedestal and hinge portion, having an electrostatically more neutral first position and an electrostatically more charged second position, the mirror being actuatable in a first direction from the first position to the second position by charge accumulation, and is actuatable in a second direction from the second position to the first position by dissipation of the charge accumulation and a stop element positioned adjacent the mirror element in the first position, configured to limit movement of the mirror element in the second direction after the mirror reaches the first position traveling in the second direction.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: May 1, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Adel Jilani, James Z. Guo, Charles G. Schmidt, Steve P. Hanson, Jeff Obert
  • Patent number: 7198834
    Abstract: An optical recording medium, comprises a substrate, and an imaging medium disposed on the substrate, the imaging medium comprising: a marking layer including a thermochromic compound and an interference layer tuned to absorb light having a predetermined wavelength.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: April 3, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Makarand P. Gore, James Z. Guo, Anurag Gupta
  • Patent number: 7019887
    Abstract: A light modulator device includes a charge plate; a reflective plate and post, the post supporting the reflective plate parallel relative to the charge plate such that a gap is formed between the charge plate and the reflective plate, the gap being relatively smaller on a first side than on a second side when the reflective plate is parallel to the charge plate.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: March 28, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: James Z. Guo, Adel Jilani, Steve P. Hanson, Jeffrey S. Obert