Patents by Inventor Ren-Wei Tsai

Ren-Wei Tsai 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).

  • Amino resin composition and varnish, coating layer, and product comprising the same
    Patent number: 10745556
    Abstract: Provided are an amino resin composition, a varnish, a coating layer, and a product. The amino resin composition comprises a repeating unit represented by the following Formula (I): A 13C-NMR spectrum of the amino resin composition has a first characteristic peak at 159 ppm to 161 ppm and a second characteristic peak at 70 ppm to 80 ppm. Based on the integral value of the first characteristic peak as 1, the integral value of the second characteristic peak is in the range from 0.01 to 0.25. Adopting the amino resin composition can accelerate the drying of the varnish and ensure the coating layer and the product have high hardness, high gloss and excellent color stability.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 18, 2020
    Assignee: CHANG CHUN PLASTICS CO., LTD.
    Inventors: Ren-Wei Tsai, You-Ting Chen, Kuo-Pin Wu, Yung-Sheng Lin, I-Chiang Lai, Yi-Sern Wong, Kuen-Yuan Hwang