Patents by Inventor Viney P. Aneja

Viney P. Aneja 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 devolatilizing polymer solutions
    Patent number: 4808262
    Abstract: A method and apparatus for devolatilizing high viscosity polymer solutions are provided wherein high viscosity polymer solutions are heated along a short zone of indirect heat exchange. The residence time within the zone of indirect heat exchange ranges from approximately 5 seconds to 120 seconds.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: February 28, 1989
    Assignee: General Electric Company
    Inventors: Viney P. Aneja, John P. Skilbeck
  • Method for purification of bisphenol A
    Patent number: 4492807
    Abstract: Bisphenol A is commonly purified by a method which includes formation of an adduct thereof with phenol from a liquid mixture to which water has been added. This method is improved by the simultaneous addition of an organic liquid in an amount up to about 15% by weight of the mixture. The preferred organic liquids are acetone and toluene.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: January 8, 1985
    Assignee: General Electric Company
    Inventor: Viney P. Aneja
  • Azeotropic recovery of BPA and phenol from aqueous effluent streams
    Patent number: 4469561
    Abstract: A method for simultaneously extracting and recovering 2,2-bis(4-hydroxy phenyl) propane and phenol from aqueous effluent streams by liquid-liquid extraction using toluene.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: September 4, 1984
    Assignee: General Electric Company
    Inventors: Subhas K. Sikdar, Viney P. Aneja
  • Recovery of BPA and phenol from aqueous effluent streams
    Patent number: 4400553
    Abstract: A method for simultaneously extracting and recovering 2,2-bis(4-hydroxyphenyl) propane and phenol from aqueous effluent streams by liquid-liquid extraction using methyl isobutyl ketone.
    Type: Grant
    Filed: June 24, 1981
    Date of Patent: August 23, 1983
    Assignee: General Electric Company
    Inventor: Viney P. Aneja
  • Purification of aqueous effluent streams containing BPA and phenol
    Patent number: 4374283
    Abstract: A method for a purifying aqueous effluent streams containing BPA and phenol using liquid-liquid extraction with methyl isobutyl ketone.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: February 15, 1983
    Assignee: General Electric Company
    Inventor: Viney P. Aneja