Patents by Inventor Eugene G. Stelmack

Eugene G. Stelmack 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).

  • Controlled Release Fertilizer And Method For Production Thereof
    Publication number: 20080236228
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture comprising: a polyol, an isocyanate and an organic wax.
    Type: Application
    Filed: June 10, 2008
    Publication date: October 2, 2008
    Applicant: AGRIUM INC.
    Inventors: Albert J. Geiger, Eugene G. Stelmack, Nicolette M. Babiak
  • Controlled release fertilizer and method for production thereof
    Publication number: 20040045331
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture comprising: a polyol, an isocyanate and an organic wax.
    Type: Application
    Filed: September 11, 2003
    Publication date: March 11, 2004
    Applicant: Agrium Inc.
    Inventors: Albert J. Geiger, Eugene G. Stelmack, Nicolette M. Babiak
  • Controlled release fertilizer and method for production thereof
    Publication number: 20040020254
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating comprising at least one substantially homogeneous layer of a urethane-containing compound and an organic additive. With appropriate selection of the additive, the shape and duration of the release profile can be modified to suit a wide variety of applications.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 5, 2004
    Applicant: Agrium
    Inventors: Nick P. Wynnyk, Eugene G. Stelmack, Nicolette M. Babiak, Leslie L. Carstens, Baozhong Xing, Albert J. Geiger, J. David Eastham
  • Controlled release fertilizer having improved mechanical handling durability and method for production thereof
    Publication number: 20040016276
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a protective coating comprising at least one substantially homogeneous layer of a urethane-containing compound and a filler(s). An organic additive(s) may or may not be present.
    Type: Application
    Filed: July 26, 2002
    Publication date: January 29, 2004
    Inventors: Nick P. Wynnyk, Eugene G. Stelmack, Nicolette M. Babiak, Leslie L. Carstens, J. David Eastham, Baozhong Xing
  • Controlled release fertilizer and method for production thereof
    Patent number: 6663686
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture comprising: a polyol, an isocyanate and an organic wax.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: December 16, 2003
    Assignee: Agrium, Inc.
    Inventors: Albert J. Geiger, Eugene G. Stelmack, Nicolette M. Babiak