Patents by Inventor Jonathan K. Kramer

Jonathan K. Kramer 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).

  • Apparatus for increasing the size of ammonium sulfate crystals
    Patent number: 5408953
    Abstract: The average size of ammonium sulfate crystals is increased by passing undersized ammonium sulfate crystals through a multistage apparatus in which the crystals are contacted with an aqueous ammonium sulfate spray in a first heated chamber to increase the average size of the crystals, the enlarged crystals thereafter passing through a second heated chamber to dry the enlarged crystals.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 25, 1995
    Assignee: BASF Corporation
    Inventors: Walter G. Thomson, Jonathan K. Kramer
  • Process and apparatus for increasing the size of ammonium sulfate crystals
    Patent number: 5330544
    Abstract: The average size of ammonium sulfate crystals is increased by passing undersized ammonium sulfate crystals through a multistage apparatus in which the crystals are contacted with an aqueous ammonium sulfate spray in a first heated chamber to increase the average size of the crystals, the enlarged crystals thereafter passing through a second heated chamber to dry the enlarged crystals.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: July 19, 1994
    Assignee: BASF Corporation
    Inventors: Walter G. Thomson, Jonathan K. Kramer