Patents by Inventor Wei Hsing LIN

Wei Hsing 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).

  • Two-step and one-pot processes for preparation of aliphatic diisocyanates
    Patent number: 9745254
    Abstract: The present invention relates to using a two-step (thermolysis) or one-pot process to prepare aliphatic diisocyanates from aliphatic diamines and diaryl carbonates. Polyisocyanates can also be prepared from polyamines and diaryl carbonates. The present synthetic processes do not apply phosgene or highly toxic reagents and chloro-solvents during the entire procedure.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: August 29, 2017
    Assignee: Great Eastern Resins Industrial Co., Ltd.
    Inventors: Shenghong A. Dai, Wei Hsing Lin, Yi-Syuan Guo
  • TWO-STEP AND ONE-POT PROCESSES FOR PREPARATION OF ALIPHATIC DIISOCYANATES
    Publication number: 20170015621
    Abstract: The present invention relates to using a two-step (thermolysis) or one-pot process to prepare aliphatic diisocyanates from aliphatic diamines and diaryl carbonates. Polyisocyanates can also be prepared from polyamines and diaryl carbonates. The present synthetic processes do not apply phosgene or highly toxic reagents and chloro-solvents during the entire procedure.
    Type: Application
    Filed: January 19, 2016
    Publication date: January 19, 2017
    Inventors: Shenghong A. DAI, Wei Hsing LIN, Yi-Syuan GUO