Patents by Inventor Abdul Rehman Y. Meah

Abdul Rehman Y. Meah 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 and composition for enhanced plant productivity comprising fertilizer and cross-linked polyamino acid
    Patent number: 5861356
    Abstract: This invention relates to enhancing plant productivity employing a method and improved compositions containing water-soluble crosslinked polyamino acids having a weight average molecular weight of a size larger than about 1,500. More particularly, crosslinked polyamino acids enhance plant productivity when supplied to the plant directly as the free acid or salt thereof or hydrolyzed from a crosslinked precursor of the crosslinked polyamino acid by the method disclosed. Particularly suitable for this purpose are water-soluble, crosslinked polyaspartic acid, and salts thereof and hydrolyzed crosslinked polysuccinimide.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: January 19, 1999
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Abdul Rehman Y. Meah, J. Larry Sanders, Robert J. Ross
  • Method for enhanced hydroponic plant productivity with polymeric acids
    Patent number: 5854177
    Abstract: Plant productivity in a hydroponic medium is enhanced by the addition of a water-soluble, non-biodegradable, non-peptidal polymeric acid having a molecular size larger than about 1,500 Daltons.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: December 29, 1998
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Abdul Rehman Y. Meah, J. Larry Sanders, Robert J. Ross
  • Method for enhanced plant productivity
    Patent number: 5814582
    Abstract: This invention relates to enhancing plant productivity employing a method which supplies to a plant a water-soluble co-polymeric acid having a molecular size larger than about 1,600 Daltons.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: September 29, 1998
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Abdul Rehman Y. Meah, Robert J. Ross, Lai-Duien Grace Fan
  • Method and composition for enhanced hydroponic plant productivity with polyamino acids
    Patent number: 5783523
    Abstract: This invention relates to enhancing plant productivity employing a method and improved compositions containing water-soluble amino acid co-polymers having a molecular size larger than about 1,500 Daltons.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: July 21, 1998
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Abdul Rehman Y. Meah, J. Larry Sanders, Robert J. Ross
  • Polyaspartic acid manufacture
    Patent number: 5391764
    Abstract: Polyaspartic acid is produced by hydrolysis of anhydropolyaspartic acid that has been produced by thermal condensation polymerization of L-aspartic acid. Conversion in excess of 80 percent is achievable utilizing "temperature vs. time" profiles.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: February 21, 1995
    Assignee: Donlar Corporation
    Inventors: Larry P. Koskan, Kim C. Low, Abdul Rehman Y. Meah, Anne Marie Atencio