Patents by Inventor Dao-Hung Lee

Dao-Hung Lee 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).

  • Liquid crystal compounds, preparation thereof, and composition containing the same
    Patent number: 7022259
    Abstract: A liquid crystal compound with high helical twisting power, a method for preparing the same, and a liquid crystal composition containing the same. The liquid crystal compounds include cyclic group chain structures similar to the liquid crystal to serve as the core structure, and multi-ring structures of natural alcohol with optical activity, such as alcoholates of terpenol, borneol, cinchonidine, quinine, or derivatives thereof. As a result, the liquid crystal composition containing the liquid crystal compounds can filter out light of specific wavelengths from incident light due to optical activity and high helical twisting power thereof.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: April 4, 2006
    Assignee: Industrial Technology Research Institute
    Inventors: Dao-Hung Lee, Ding-Jen Chen, Kung-Lung Cheng
  • Liquid crystal compounds, preparation thereof, and composition containing the same
    Publication number: 20050189515
    Abstract: A liquid crystal compound with high helical twisting power, a method for preparing the same, and a liquid crystal composition containing the same. The liquid crystal compounds include cyclic group chain structures similar to the liquid crystal to serve as the core structure, and multi-ring structures of natural alcohol with optical activity, such as alcoholates of terpenol, borneol, cinchonidine, quinine, or derivatives thereof. As a result, the liquid crystal composition containing the liquid crystal compounds can filter out light of specific wavelengths from incident light due to optical activity and high helical twisting power thereof.
    Type: Application
    Filed: September 30, 2003
    Publication date: September 1, 2005
    Inventors: Dao-Hung Lee, Ding-Jen Chen, Kung-Lung Cheng