Patents by Inventor Sing-Yan Wan

Sing-Yan Wan 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).

  • Printer fluid priming using multiple air priming units
    Patent number: 10052881
    Abstract: An air priming system is described that can prime printer fluid of one or more printer fluid tanks of a printer. The air priming system includes multiple priming units that are coupled together so as to be rotated or otherwise adjusted together to be paced into one of a plurality of priming stages. In each of the plurality of priming stages, air flow is either allowed or blocked through specific priming units.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: August 21, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sing-Yan Wan, Michelle Mae Marinito
  • Media linefeed error compensation method
    Patent number: 7537334
    Abstract: In a method for compensating for media linefeed errors in a media feed apparatus, a first correction parameter is applied during a first length of a media feed operation and a second correction parameter, which differs from the first correction parameter, is applied during a second length of the media feed operation.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: May 26, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Aiqiang Yang, Michael Nordlund, Manish Agarwal, Sing-Yan Wan, Ban-Ho Chong
  • Media linefeed error compensation method
    Publication number: 20070064079
    Abstract: In a method for compensating for media linefeed errors in a media feed apparatus, a first correction parameter is applied during a first length of a media feed operation and a second correction parameter, which differs from the first correction parameter, is applied during a second length of the media feed operation.
    Type: Application
    Filed: September 20, 2005
    Publication date: March 22, 2007
    Inventors: Aiqiang Yang, Michael Nordlund, Manish Agarwal, Sing-Yan Wan, Ban-Ho Chong