Patents by Inventor Yi-Yun Lin

Yi-Yun Lin 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).

  • Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase dehydration reaction at atomospheric pressure
    Patent number: 5569770
    Abstract: The present invention relates to a method for the production of N-vinyl-2-pyrrolidone by gas-phase reaction at atmospheric pressure. The method is characterized in that a gas-phase reaction is conducted by using N-.beta.-Hydroxyethyl-2-Pyrrolidones serving as raw materials, at a temperature of 300.degree.-450.degree. C., a space velocity of 500-4500 hr.sup.-1 in the presence of a mixed oxide of group IV elements, or an oxide of group IV elements, which has been modified by group I or group II elements.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: October 29, 1996
    Assignee: Industrial Technology Research Institute
    Inventors: Pine-Sci Kuo, Shiao-Jung Chu, Chu-Chang Dai, Hsi-Yen Hsu, Ching-Tang Lin, Yi-Yun Lin