Patents by Inventor Ya-Hsuan LIAO

Ya-Hsuan LIAO 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).

  • Patent number: 11034107
    Abstract: A surface-modified contact lens, having a surface contact angle hysteresis of less than 15°, includes a lens body and a first surface modification layer disposed on a surface of the lens body. The first surface modification layer comprises a first reactive hydrophilic polymer. The surface of the lens body has a first functional group or a second functional group, and the first reactive hydrophilic polymer has a third functional group or a fourth functional group. A first covalent cross-link bond is formed between the surface of the lens body and the first surface modification layer. The first covalent cross-link bond is formed by reacting the first functional group or the second functional group of the surface of the lens body with the third functional group or the fourth functional group of the first reactive hydrophilic polymer.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: June 15, 2021
    Assignee: PEGAVISION CORPORATION
    Inventors: Yu-Chin Lai, Ming-Nan Lin, Min-Tzung Yeh, Ya-Hsuan Liao
  • Publication number: 20190009482
    Abstract: A surface-modified contact lens, having a surface contact angle hysteresis of less than 15°, includes a lens body and a first surface modification layer disposed on a surface of the lens body. The first surface modification layer comprises a first reactive hydrophilic polymer. The surface of the lens body has a first functional group or a second functional group, and the first reactive hydrophilic polymer has a third functional group or a fourth functional group. A first covalent cross-link bond is formed between the surface of the lens body and the first surface modification layer. The first covalent cross-link bond is formed by reacting the first functional group or the second functional group of the surface of the lens body with the third functional group or the fourth functional group of the first reactive hydrophilic polymer.
    Type: Application
    Filed: February 14, 2018
    Publication date: January 10, 2019
    Inventors: Yu-Chin LAI, Ming-Nan LIN, Min-Tzung YEH, Ya-Hsuan LIAO
  • Patent number: 9925293
    Abstract: A solution for treating contact lens is provided. The solution includes about 0.01-1.0 parts by weight (pbw) of a polymer having phosphorylcholine groups, about 0.01-1 pbw of an inorganic salt, and about 100 pbw of water. The polymer has a number-average molecular weight of about 4,000 to about 1,000,000 daltons and has a structure of formula (I): wherein, in formula (I), m is a positive integer, n is zero or a positive integer, and R is C2-C12 alkyl group or C2-C12 hydroxyalkyl group. When n is a positive integer, m/n is greater than 1.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: March 27, 2018
    Assignee: PEGAVISION CORPORATION
    Inventors: Han-Yi Chang, Ya-Hsuan Liao, Shu-Chen Lu, Ya-Hui Chang, Yu-Chin Lai
  • Publication number: 20170368221
    Abstract: A solution for treating contact lens is provided. The solution includes about 0.01-1.0 parts by weight (pbw) of a polymer having phosphorylcholine groups, about 0.01-1 pbw of an inorganic salt, and about 100 pbw of water. The polymer has a number-average molecular weight of about 4,000 to about 1,000,000 daltons and has a structure of formula (I): wherein, in formula (I), m is a positive integer, n is zero or a positive integer, and R is C2-C12 alkyl group or C2-C12 hydroxyalkyl group. When n is a positive integer, m/n is greater than 1.
    Type: Application
    Filed: September 5, 2016
    Publication date: December 28, 2017
    Inventors: Han-Yi CHANG, Ya-Hsuan LIAO, Shu-Chen LU, Ya-Hui CHANG, Yu-Chin LAI