Patents by Inventor Mark H. Pratton

Mark H. Pratton 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).

  • Large scale batch process for diazomethane
    Patent number: 5817778
    Abstract: Diazomethane is prepared in a batch process on a scale of at least 50 gram-moles per batch, from an N-methyl-N-nitroso amine in an organic solvent and an inorganic base in an aqueous solution by the use of a phase transfer catalyst and by controlling the choice of solvent, reagent concentrations, addition rate and reaction temperature to cause codistillation of the product and the organic solvent in such a manner that the concentration of diazomethane in both liquid and vapor phases are controlled within limits that will prevent detonation of the diazomethane.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: October 6, 1998
    Assignee: Aerojet-General Corporation
    Inventors: Thomas G. Archibald, Der-Shing Huang, Mark H. Pratton, James C. Barnard