Patents by Inventor Chyn Yeong Wong

Chyn Yeong 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).

  • Patent number: 6402307
    Abstract: The present invention relates to an ink jet cartridge, in particular for supplying ink to an ink jet head of a recording apparatus, such as a printer or the like, said cartridge being characterised in that it contains at least two vacuum producing materials of different vacuum producing capacities while the higher density cellular material serves to meter the flow of ink there is another lower density cellular material disposed upstream of the denser material to provide a sufficient ink storage capacity.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: June 11, 2002
    Assignee: Fullmark PTE Ltd.
    Inventors: Chyn Yeong Wong, Chung Mun Wong