Patents by Inventor Joseph Norman Hockman

Joseph Norman Hockman 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).

  • Process for preparing fluorinated alkyl carboxylate esters
    Patent number: 7579498
    Abstract: A process for preparing fluorinated alkyl carboxylate esters comprises reaction of a silver carboxylate or silver carboxylate precursor, such as silver (I) iodide with a fluorinated alkyl iodide and a carboxylic acid. Preferably the fluorinated alkyl iodide has the general formula CF3(CF2)nCH2CH2I, wherein n is an integer in the range of from 1 to 29 and the carboxylic acid is acetic acid, acrylic acid or methacrylic acid.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: August 25, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Allen Andrews, Alexander Borisovich Shtarov, Joseph Norman Hockman
  • Process for preparing peroxides
    Patent number: 5962746
    Abstract: A process for the faster manufacturing of hydrocarbon, fluorocarbon and chlorocarbon acyl peroxides is disclosed wherein a hydroxide, a peroxide and an acyl halide are reacted under continuous vigorous agitation conditions so as to bring the reaction to substantial completion is less than one minute.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: October 5, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: George Francis Diffendall, Thomas William Harding, Joseph Norman Hockman, Carl George Krespan, Matthew John Targett, Robert Clayton Wheland