Patents by Inventor Anne M. Atencio

Anne M. Atencio 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).

  • Polyaspartic acid having more than 50% .beta. form and less that 50% .alpha. form
    Patent number: 5373086
    Abstract: .beta.-Polyaspartic acid having a weight average molecular weight of 1000 to 5000 produced by hydrolysis of anhydropolyaspartic acid exhibits a high degree of calcium carbonate and calcium phosphate inhibition.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: December 13, 1994
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Kim C. Low, Abdul R. Y. Meah, Anne M. Atencio
  • Polyaspartic acid manufacture
    Patent number: 5315010
    Abstract: Polyaspartic acid having a weight average molecular weight of 1000 to 5000 is produced by hydrolysis of anhydropolyaspartic acid that has been produced by condensation polymerization of L-aspartic acid. Conversion in excess of 80 percent is achievable utilizing "temperature vs. time" profiles.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: May 24, 1994
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Kim C. Low, Abdul R. Y. Meah, Anne M. Atencio
  • Manufacture of polyaspartic acids
    Patent number: 5221733
    Abstract: Polyaspartic acid having a weight average molecular weight of 1000 to 5000 is produced by hydrolysis of anhydropolyaspartic acid. Anhydropolyaspartic acid is produced by condensation polymerization of L-aspartic acid. Greater than 80% conversion is achievable utilizing "temperature vs time" profiles.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: June 22, 1993
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Kim C. Low, Abdul R. Y. Meah, Anne M. Atencio
  • Polyaspartic acid as a calcium carbonate and a calcium phosphate inhibitor
    Patent number: 5152902
    Abstract: .beta.-Polyaspartic acid having a weight average molecular weight of 1000 to 5000 produced by hydrolysis of anhydropolyaspartic acid, exhibits a high degree of calcium carbonate and calcium phosphate inhibition.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: October 6, 1992
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Kim C. Low, Abdul R. Y. Meah, Anne M. Atencio