Patents by Inventor Swei Jen Wong

Swei Jen Wong 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).

  • Vent for a liquid container
    Patent number: 9308732
    Abstract: In one example, a sealable vent for an ink cartridge or other liquid container includes a recess having a sloping first wall and a removable cover covering the recess and sealing the vent.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: April 12, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Boon Leng Chua, Sittampalam Paranan, Ping Siew Kwok, Swei Jen Wong
  • Ink supply
    Patent number: 8556394
    Abstract: An ink supply containing an alkaline ink passivates a silicon diaphragm of a pressure sensor against etching from the alkaline ink using a silicon dioxide layer.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 15, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Qiong Chen, Julita Oentojo, Yat Yuen Chan, Swei Jen Wong
  • INK SUPPLY
    Publication number: 20130027479
    Abstract: An ink supply containing an alkaline ink passivates a silicon diaphragm of a pressure sensor against etching from the alkaline ink using a silicon dioxide layer.
    Type: Application
    Filed: July 27, 2011
    Publication date: January 31, 2013
    Inventors: Qiong Chen, Julita Oentojo, Yat Yuen Chan, Swei Jen Wong