Patents by Inventor Jui H. Chao

Jui H. Chao 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: 4602397
    Abstract: An improved writing tool consists essentially of a punctuation marking and error designation rubber seal supplemented by a capping furnished with seal stamping paste; two holes within the body, to permit insertion of a pen or a pencil stick, and a ruler; a clip serving to hold sheet of paper as well as pen holder; a cutter attached to the other side of the clip, serving to cut paper into smaller segments or chips as required. Such a tool proves to be advantageous and convenient in terms of utility, serviceability, endurance and convenience of application.
    Type: Grant
    Filed: November 23, 1984
    Date of Patent: July 29, 1986
    Inventor: Jui H. Chao