Patents by Inventor John A. Milner

John A. Milner 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).

  • Preparation cyano substituted cyclopropane
    Patent number: 4118412
    Abstract: A process for the preparation of cyclopropane compounds which comprises reacting a compound of formula:Y--CH.sub.2 --CNwith a diene of formula:CX.sub.2 =CH--CH=C(CH.sub.3).sub.2in the presence of at least one reducible copper salt, X being chlorine or bromine and Y being cyano, alkoxycarbonyl containing up to four carbon atoms in the alkoxy moiety, benzyloxycarbonyl, phenoxybenzyloxycarbonyl or 2,2-dichlorovinyloxybenzyloxycarbonyl.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: October 3, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Peter John Vernon Cleare, Albert Edward Kaye, David John Milner
  • Oxidative coupling process
    Patent number: 4056574
    Abstract: Isobutene is oxidatively coupled with vinylidene chloride by heating in the presence of palladium acetate, to give 1,1-dichloro-4-methylpenta-1,3-diene. This compound is useful as an intermediate in the production of insecticides. Any 1,1-dichloro-4-methylpenta-1,4-diene also produced is thermally isomerized to the 1,3 product.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: November 1, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Holland, David John Milner, Hugh Wilma Boulton Reed