Patents by Inventor Jonathan Luke William Griffin

Jonathan Luke William Griffin 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 the preparation of cyclopropylglycine
    Patent number: 6191306
    Abstract: Disclosed is a process for the preparation of cyclopropylglycine by a 5-step process wherein cyclopropanecarboxaldehyde is reacted with an &agr;-aminoalkylaromatic compound to obtain an imine which is reacted with a cyanide to produce an aminonitrile compound; the aminonitrile compound is hydrolyzed to the corresponding aminocarboxylic acid and finally the arylalkyl residue is removed from the amino group by hydrogenolysis.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: February 20, 2001
    Assignee: Eastman Chemical Company
    Inventors: Daniel John Bayston, Jonathan Luke William Griffin, Arne Gruman, Mario Eugenio Cosimino Polywka, Ronald Michael Scott
  • Process for the preparation of cyclopropylglycine
    Patent number: 6103929
    Abstract: Disclosed is a process for the preparation of cyclopropylglycine by a 5-step process wherein cyclopropanecarboxaldehyde is reacted with an .alpha.-aminoalkylaromatic compound to obtain an imine which is reacted with a cyanide to produce an aminonitrile compound; the aminonitrile compound is hydrolyzed to the corresponding aminocarboxylic acid and finally the arylalkyl residue is removed from the amino group by hydrogenolysis.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: August 15, 2000
    Assignee: Eastman Chemical Company
    Inventors: Daniel John Bayston, Jonathan Luke William Griffin, Arne Grumann, Mario Eugenio Cosimino Polywka, Ronald Michael Scott
  • Process for the preparation of cyclopropylglycine
    Patent number: 6090982
    Abstract: Disclosed is a process for the preparation of cyclopropylglycine by a 5-step process wherein cyclopropanecarboxaldehyde is reacted with an .alpha.-aminoalkylaromatic compound to obtain an imine which is reacted with a cyanide to produce an aminonitrile compound; the aminonitrile compound is hydrolyzed to the corresponding aminocarboxylic acid and finally the arylalkyl residue is removed from the amino group by hydrogenolysis.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: July 18, 2000
    Assignee: Eastman Chemical Company
    Inventors: Daniel John Bayston, Jonathan Luke William Griffin, Arne Gruman, Mario Eugenio Cosimino Polywka, Ronald Michael Scott