Patents by Inventor CHIEN-HOUNG LIU

CHIEN-HOUNG LIU 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).

  • BULB SHELL FOR LED LIGHT BULBS
    Publication number: 20110175516
    Abstract: A bulb shell includes a transparent shell base having an opening, a largest outer diameter and a light projection surface defined by a critical boundary on the shell base, and a coating on the shell base in a region between the opening and the critical boundary to increase brightness of the light projection surface. The critical boundary lies between a first position where the largest outer diameter is located and a second position distant from the first position by 33% of the dimension of the largest outer diameter in a direction away from the opening. The coating will significantly increase the brightness of the light projection surface when the bulb shell is used in a LED light bulb.
    Type: Application
    Filed: October 19, 2010
    Publication date: July 21, 2011
    Applicant: LIGHTING DEVICE TECHNOLOGIES CORP.
    Inventors: CHIEN-HOUNG LIU, YUNG-MING TSAO, YING-CHIEH TSAI