Patents by Inventor SHENG-TUNG WEN

SHENG-TUNG WEN 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 preparing a cellulose sponge
    Patent number: 10815313
    Abstract: A method for preparing a cellulose sponge, comprising: (A) providing a solution of hydroxypropyl cellulose having a self-crosslinkable substituent; and (B) adding an initiator and a catalyst into the solution of hydroxypropyl cellulose having the self-crosslinkable substituent for crosslinking, wherein a method for preparing the hydroxypropyl cellulose having the self-crosslinkable substituent comprises: (a) dissolving hydroxypropyl cellulose in dimethylformamide to form a hydroxypropyl cellulose solution; (b) dissolving a compound comprising the self-crosslinkable substituent in dimethylformamide and slowly adding it drop by drop into the hydroxypropyl cellulose solution; (c) adding an alcohol for reaction; and (d) reacting and drying at room temperature to form the hydroxypropyl cellulose having the self-crosslinkable substituent.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: October 27, 2020
    Assignee: SHANXI PISHON BIOMEDICAL TECHNOLOGY CO., LTD
    Inventor: Sheng-Tung Wen
  • Method for preparing a cellulose sponge and mixed solution thereof
    Patent number: 10301442
    Abstract: The present invention relates to a method for preparing a cellulose sponge, comprising: (A) providing a solution of hydroxypropyl cellulose having a self-crosslinkable substituent; and (B) irradiating the solution of hydroxypropyl cellulose having the self-crosslinkable substituent with ?-ray for crosslinking, wherein a method for preparing the hydroxypropyl cellulose having the self-crosslinkable substituent comprises: (a) dissolving hydroxypropyl cellulose in dimethylformamide to form a hydroxypropyl cellulose solution; (b) dissolving a compound comprising the self-crosslinkable substituent in dimethylformamide and slowly adding it drop by drop into the hydroxypropyl cellulose solution; (c) adding alcohol for reaction; and (d) reacting and drying at room temperature to form the hydroxypropyl cellulose having the self-crosslinkable substituent.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: May 28, 2019
    Assignee: PISHON BIOMEDICAL CO., LTD
    Inventor: Sheng-Tung Wen
  • METHOD FOR PREPARING A CELLULOSE SPONGE
    Publication number: 20180148515
    Abstract: A method for preparing a cellulose sponge, comprising: (A) providing a solution of hydroxypropyl cellulose having a self-crosslinkable substituent; and (B) adding an initiator and a catalyst into the solution of hydroxypropyl cellulose having the self-crosslinkable substituent for crosslinking, wherein a method for preparing the hydroxypropyl cellulose having the self-crosslinkable substituent comprises: (a) dissolving hydroxypropyl cellulose in dimethylformamide to form a hydroxypropyl cellulose solution; (b) dissolving a compound comprising the self-crosslinkable substituent in dimethylformamide and slowly adding it drop by drop into the hydroxypropyl cellulose solution; (c) adding an alcohol for reaction; and (d) reacting and drying at room temperature to form the hydroxypropyl cellulose having the self-crosslinkable substituent.
    Type: Application
    Filed: April 10, 2017
    Publication date: May 31, 2018
    Applicant: PISHON BIOMEDICAL CO., LTD
    Inventor: SHENG-TUNG WEN
  • METHOD FOR PREPARING A CELLULOSE SPONGE AND MIXED SOLUTION THEREOF
    Publication number: 20180072855
    Abstract: The present invention relates to a method for preparing a cellulose sponge, comprising: (A) providing a solution of hydroxypropyl cellulose having a self-crosslinkable substituent; and (B) irradiating the solution of hydroxypropyl cellulose having the self-crosslinkable substituent with ?-ray for crosslinking, wherein a method for preparing the hydroxypropyl cellulose having the self-crosslinkable substituent comprises: (a) dissolving hydroxypropyl cellulose in dimethylformamide to form a hydroxypropyl cellulose solution; (b) dissolving a compound comprising the self-crosslinkable substituent in dimethylformamide and slowly adding it drop by drop into the hydroxypropyl cellulose solution; (c) adding alcohol for reaction; and (d) reacting and drying at room temperature to form the hydroxypropyl cellulose having the self-crosslinkable substituent.
    Type: Application
    Filed: December 7, 2016
    Publication date: March 15, 2018
    Applicant: PISHON BIOMEDICAL CO., LTD
    Inventor: SHENG-TUNG WEN