Patents by Inventor Chien C. Chao

Chien C. Chao 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).

  • Bulk separation of inositol and sorbitol by selective adsorption on zeolitic molecular sieves
    Patent number: 4482761
    Abstract: A process for the bulk separation of inositol and/or sorbitol is disclosed which comprises the selective adsorption of same on certain types of zeolitic molecular sieves. The process is especially useful for separating inositol from aqueous solutions containing same, using type X and type Y zeolite adsorbents whose cations are Na, Ca or Ba.
    Type: Grant
    Filed: January 12, 1983
    Date of Patent: November 13, 1984
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Adsorbent compositions
    Patent number: 4474896
    Abstract: Adsorbent compositions and their preparation are disclosed for the adsorption of elemental mercury.
    Type: Grant
    Filed: March 31, 1983
    Date of Patent: October 2, 1984
    Assignee: Union Carbide Corporation
    Inventor: Chien C. Chao
  • Separation of mannose by selective adsorption on zeolitic molecular sieves
    Patent number: 4471114
    Abstract: A process for the separation of mannose is disclosed which comprises the selective adsorption of same on certain types of zeolitic molecular sieves. The process is especially useful for separating mannose from glucose epimerization product or plant tissue hydrolyzate, using zeolites selected from the group consisting of BaX, BaY, SrY, NaY and CaY.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: September 11, 1984
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Chien C. Chao
  • Bulk separation of polyhydric alcohols by selective adsorption on zeolitic molecular sieves
    Patent number: 4456774
    Abstract: Mannitol is separated from admixture with galactitol and/or from sorbitol by selective adsorption on cationic forms of zeolite X and zeolite Y.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: June 26, 1984
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Chien C. Chao
  • Bulk lactulose/lactose separation by selective adsorption on zeolitic molecular sieves
    Patent number: 4394178
    Abstract: Lactulose is selectively adsorbed from admixture with lactose using specific cationic forms (particularly barium or potassium) of modified zeolite Y.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: July 19, 1983
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Bulk cyclohexanol/cyclohexanone separation by selective adsorption on zeolitic molecular sieves
    Patent number: 4283560
    Abstract: Cyclohexanone is selectively adsorbed from admixture with cyclohexanol using specific cationic forms of zeolite X and zeolite Y. The process utilizes the interaction of the electrostatic field of the zeolite with the slightly greater polarity of the cyclohexanone to enhance the adsorptive strength difference between the competing adsorbates.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: August 11, 1981
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman