Patents by Inventor Steven Huffman

Steven Huffman 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).

  • Pelletized ammonium sulfate particles
    Patent number: 8377410
    Abstract: The invention relates to a method for preparing pelletized ammonium sulfate particles, the method comprising—providing ammonium sulfate crystals;—isolating a fraction comprising crystals having an intermediate size from crystals having a small size and from crystals having a large size, thereby obtaining remaining crystals comprised of crystals having small size and crystals having large size; and—pelletizing through a die at least part of the remaining crystals, i.e. at least part of the crystals from which the fraction comprising crystals having the intermediate size have been isolated, thereby forming pelletized ammonium sulfate particles.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: February 19, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Steven Huffman, James Franklin Parkinson, Justice Fine
  • PELLETIZED AMMONIUM SULFATE PARTICLES
    Publication number: 20110268644
    Abstract: The invention relates to a method for preparing pelletized ammonium sulfate particles, the method comprising—providing ammonium sulfate crystals;—isolating a fraction comprising crystals having an intermediate size from crystals having a small size and from crystals having a large size, thereby obtaining remaining crystals comprised of crystals having small size and crystals having large size; and—pelletizing through a die at least part of the remaining crystals, i.e. at least part of the crystals from which the fraction comprising crystals having the intermediate size have been isolated, thereby forming pelletized ammonium sulfate particles.
    Type: Application
    Filed: July 22, 2009
    Publication date: November 3, 2011
    Inventors: Steven Huffman, James Franklin Parkinson, Justice Fine