Patents by Inventor Barney Vallino, Jr.

Barney Vallino, Jr. 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).

  • Production of D,L-aspartic acid
    Patent number: 5907057
    Abstract: The present invention is directed to a method for the production of D,L-aspartic acid. The method comprises reacting an unsaturated dicarboxylic acid or anhydride, such as, maleic acid, fumaric acid, maleic anhydride, or mixtures thereof, with excess aqueous ammonia at an elevated temperature and pressure for a time sufficient to produce diammonium D,L-aspartate. The produced diammonium D,L-aspartate is then neutralized to D,L-aspartic acid. Excess unreacted ammonia and various by-products may be recycled and re-used in the method, thereby minimizing waste and reducing cost. The produced D,L-aspartic acid may be subsequently used to make polyaspartic acid.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: May 25, 1999
    Assignee: Donlar Corporation
    Inventors: Grigory Ya. Mazo, Jacob Mazo, Barney Vallino, Jr., Robert J. Ross
  • Production of D,L-aspartic acid
    Patent number: 5872285
    Abstract: The present invention is directed to a method for the production of D,L-aspartic acid. The method comprises reacting an unsaturated dicarboxylic acid or anhydride, such as, maleic acid, fumaric acid, maleic anhydride, or mixtures thereof, with excess aqueous ammonia at an elevated temperature and pressure for a time sufficient to produce diammonium D,L-aspartate. The produced diammonium D,L-aspartate is then neutralized to D,L-aspartic acid. Excess unreacted ammonia and various by-products may be recycled and re-used in the method, thereby minimizing waste and reducing cost. The produced D,L-aspartic acid may be subsequently used to make polyaspartic acid.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: February 16, 1999
    Assignee: Donlar Corporation
    Inventors: Grigory Ya Mazo, Jacob Mazo, Barney Vallino, Jr., Robert J. Ross
  • Method for the preparation of dried latex polymer from aqueous emulsion
    Patent number: 4035347
    Abstract: A method for preparing substantially dry homopolymers and copolymers which comprises forming a polymeric latex or water-in-oil emulsion and partially inverting said latex by regulated contact time with water in the time span 0.5 - 10.0 seconds and preferably less than 1 second. A preferred operation is carried out in a static mixer where the contact time for inversion is regulated by the diameter or length of a cylindrical tube containing static baffles.
    Type: Grant
    Filed: March 2, 1976
    Date of Patent: July 12, 1977
    Assignee: Nalco Chemical Company
    Inventors: David B. Korzenski, Barney Vallino, Jr., Wayne E. Zarnecki