Patents by Inventor Chi Koa

Chi Koa 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).

  • Speaker noise path shield
    Publication number: 20060049664
    Abstract: A door assembly comprises an interior panel and an exterior panel. A first semi-rigid barrier sheet is disposed between the interior and exterior panels. One or more features are formed in the first semi-rigid barrier sheet accommodating components housed between the interior and exterior panels. A second semi-rigid barrier sheet is offset from the first semi-rigid barrier sheet to diffuse sound waves directed toward an aperture formed through the first semi-rigid barrier sheet.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 9, 2006
    Inventor: Chi Koa
  • 3-D molded watershield resonance frequency diffuser
    Publication number: 20050210779
    Abstract: A molded water-shield integrated between an exterior panel assembly and a trim panel of a vehicle. The molded water-shield includes a semi-rigid barrier sheet and a series of resonance frequency diffusion (RFD) reliefs formed in the semi-rigid barrier sheet. The RFD reliefs diffuse sound waves directed at the semi-rigid barrier sheet.
    Type: Application
    Filed: February 15, 2005
    Publication date: September 29, 2005
    Inventors: Chi Koa, Donald Stedman
  • WATER SHIELD WITH INTEGRATED 3-D MIRROR SEAL
    Publication number: 20050156450
    Abstract: A molded water shield integrated between an exterior panel assembly and a trim panel of a vehicle includes a semi-rigid barrier sheet and a seal integrally molded into the semi-rigid barrier sheet. The seal includes reliefs formed therein and is detachable from the semi-rigid barrier sheet to define an opening through the semi-rigid barrier sheet.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 21, 2005
    Inventors: Chi Koa, Quoc Nguyen
  • 3-D MOLDED WATERSHIELD RESONANCE FREQUENCY DIFFUSER
    Publication number: 20050093334
    Abstract: A molded water-shield integrated between an exterior panel assembly and a trim panel of a vehicle. The molded water-shield includes a semi-rigid barrier sheet and a series of resonance frequency diffusion (RFD) reliefs formed in the semi-rigid barrier sheet. The RFD reliefs diffuse sound waves directed at the semi-rigid barrier sheet.
    Type: Application
    Filed: October 30, 2003
    Publication date: May 5, 2005
    Inventors: Chi Koa, Donald Stedman