Patents Assigned to Regal Chemical Company
  • Slow-release fertilizer and method of making and using same
    Patent number: 8357221
    Abstract: There is disclosed a fertilizer composition comprising a water-insoluble slow-release reacted nitrogen fertilizer and an effective amount of a water-soluble, non-aromatic poly(amino acid) of the group poly(aspartic acid), poly(glutamic acid), poly(glycine), poly(lysine) a copolymer of cystein and glutamic acid and a terpolymer of cystein and glutamic acid and aspartic acid, wherein the poly(amino acid) has a molecular size larger than that which can be absorbed by a plant. A method of making and using the fertilizer composition is also disclosed.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 22, 2013
    Assignee: Regal Chemical Company
    Inventors: William E. King, Ronald P. Fister, Stanley J. Norris
  • Slow-release fertilizer and method of making and using same
    Patent number: 8182572
    Abstract: There is disclosed a fertilizer composition comprising a water-insoluble slow-release reacted nitrogen fertilizer and an effective amount of a water-soluble, non-aromatic poly(amino acid) of the group poly(aspartic acid), poly(glutamic acid), poly(glycine), poly(lysine) a copolymer of cystein and glutamic acid and a terpolymer of cystein and glutamic acid and aspartic acid, wherein the poly(amino acid) has a molecular size larger than that which can be absorbed by a plant. A method of making and using the fertilizer composition is also disclosed.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: May 22, 2012
    Assignee: Regal Chemical Company
    Inventors: William E. King, Ronald P. Fister, Stanley J. Norris