Patents by Inventor Songzhou Hu

Songzhou Hu 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).

  • Process for the production of taurine from ethanol
    Patent number: 9108907
    Abstract: The present invention discloses a process for the preparation of taurine from ethionic acid and ethanol by way of ethanol-derived ethionic acid by the ammonolysis of ethionic acid and by the ammonolysis of sodium isethionate and sodium vinyl sulfonate, key intermediates prepared from ethionic acid.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: August 18, 2015
    Inventor: Songzhou Hu
  • Process for the production of taurine from ethanol
    Publication number: 20150210633
    Abstract: The present invention discloses a process for the preparation of taurine from ethionic acid and ethanol by way of ethanol-derived ethionic acid by the ammonolysis of ethionic acid and by the ammonolysis of sodium isethionate and sodium vinyl sulfonate, key intermediates prepared from ethionic acid.
    Type: Application
    Filed: January 29, 2014
    Publication date: July 30, 2015
    Inventor: Songzhou Hu
  • Cyclic process for the production of taurine from monoethanolamine
    Publication number: 20150183731
    Abstract: A method is disclosed for the production of taurine in high yield by a cyclic process of reacting monoethanolamine, sulfuric acid, and ammonium sulfite in the presence of additives to inhibit the hydrolysis of 2-aminoethyl hydrogen sulfate intermediate. The cyclic process is economical and little waste is generated.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 2, 2015
    Inventor: Songzhou Hu
  • Cyclic process for the production of taurine from ethylene oxide
    Patent number: 9061976
    Abstract: The present invention discloses a cyclic process for the production of taurine from ethylene oxide in a high yield of greater than 95% by continuously converting the byproducts of the ammonolysis reaction, sodium ditaurinate and sodium tritaurinate, to sodium taurinate. The cyclic process is completed by using sulfur dioxide or sulfurous acid to neutralize sodium taurinates to recover taurine and to regenerate sodium bisulfite, which is then reacted with ethylene oxide.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: June 23, 2015
    Inventor: Songzhou Hu
  • Process for the production of ethionic acid
    Patent number: 9061978
    Abstract: The present invention discloses a process for the production of ethionic acid by reacting ethanol with sulfur trioxide in a molar ratio of 1:2 at a temperature from 40 to 100° C. in a falling film reactor while cooling the reactor with a cooling means.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: June 23, 2015
    Inventor: Songzhou Hu
  • Cyclic process for the production of taurine
    Patent number: 8609890
    Abstract: A method is disclosed for the production of taurine by a cyclic process of reacting ethylene oxide with sodium bisulfite and ammonium to obtain sodium taurinate. After excess ammonia is removed from the reaction mixture, sodium taurinate is neutralized with sulfur dioxide or sulfurous acid to recover taurine and to regenerate sodium bisulfate, which is then reacted with ethylene oxide.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: December 17, 2013
    Inventor: Songzhou Hu