Patents by Inventor Srirakrishna Maruvada

Srirakrishna Maruvada 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).

  • Cross-linked polyols for controlled release fertilizers
    Patent number: 8795406
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating including a mixture of a cross-linked polyol and an isocyanate, and optionally a wax, is described. In some embodiments, the cross-linked polyol can be cross-linked with sulfur, oxygen, and/or a peroxide cross-linking moiety. In one embodiment the cross-linked polyol is castor oil cross-linked with sulfur.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: August 5, 2014
    Assignee: Agrium Advanced Technologies (U.S.) Inc.
    Inventors: Srirakrishna Maruvada, Nick Peter Wynnyk, Baozhong Xing
  • CROSS-LINKED POLYOLS FOR CONTROLLED RELEASE FERTILIZERS
    Publication number: 20120111077
    Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating including a mixture of a cross-linked polyol and an isocyanate, and optionally a wax, is described. In some embodiments, the cross-linked polyol can be cross-linked with sulfur, oxygen, and/or a peroxide cross-linking moiety. In one embodiment the cross-linked polyol is castor oil cross-linked with sulfur.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 10, 2012
    Applicant: Agrium Advanced Technologies
    Inventors: Srirakrishna Maruvada, Nick Peter Wynnyk, Baozhong Xing