Patents by Inventor Liwen Liao

Liwen Liao 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).

  • Writing instrument with rotatable design element
    Patent number: 6890116
    Abstract: A writing instrument having a rotatable design element, such as a logo, on its pocket clip is disclosed. The design element is mounted for rotation on a spondle portion that protrudes through the clip. A rod having its proximal end coupled to the writing tip for longitudinal movement therewith extends through the writing instrument's body at a position masked by the pocket clip. The distal end of the rod is coupled to the spindle to induce rotational movement of the design element when the writing tip moves longitudinally.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: May 10, 2005
    Inventors: Allen Petroskey, Liwen Liao, Edward Busath
  • WRITING INSTRUMENT WITH ROTATABLE DESIGN ELEMENT
    Publication number: 20050084319
    Abstract: A writing instrument having a rotatable design element, such as a logo, on its pocket clip is disclosed. The design element is mounted for rotation on a spondle portion that protrudes through the clip. A rod having its proximal end coupled to the writing tip for longitudinal movement therewith extends through the writing instrument's body at a position masked by the pocket clip. The distal end of the rod is coupled to the spindle to induce rotational movement of the design element when the writing tip moves longitudinally.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 21, 2005
    Inventors: Allen Petroskey, Liwen Liao, Edward Busath