Patents by Inventor Melinda Hale

Melinda Hale 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 of N-substituted aminoorganosilanes
    Patent number: 6448425
    Abstract: A process is disclosed for the synthesis of N-cycloalkylaminoalkylsilanes, wherein the process comprises hydrogenating the corresponding N-arylaminoalkylsilanes in the presence of a catalytically effective amount of a supported or unsupported catalyst selected from the group consisting of palladium, platinum, nickel, rhenium, rhodium, ruthenium, copper chromite, and mixtures of the foregoing.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: September 10, 2002
    Assignee: Crompton Corporation
    Inventors: Steven C. Gedon, Melinda Hale
  • Process for preparing silylorganomercaptans
    Patent number: 6433206
    Abstract: A process for preparing an organomercaptan is provided which comprises reacting a sulfide of the general formula (I) ((R1)3—Si—R2—S&Parenclosest;2Sm  (I) in which each R1 is the same or different alkyl group of up to about 6 carbon atoms, aryl group of up to about 10 carbon atoms or alkoxy group of up to about 6 carbon atoms, or at least two of R1 and the silicon atom to which they are bonded form a ring system having up to about 12 ring members with no ethylenic unsaturation and optionally containing one or more heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, each R2 is the same or different divalent hydrocarbon group containing no ethylenic unsaturation and having up to about 20 carbon atoms and m is 0 to about 8, with hydrogen under hydrogenolysis conditions in the presence of a catalytically effective amount of Group VIII metal catalyst and in the presence of a catalyst poisoning inhibiting amount of a catalyst poisoning inhibitory agent selecte
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: August 13, 2002
    Assignee: Crompton Corporation
    Inventors: Steven C. Gedon, Melinda Hale
  • Process for preparing bis(silylorgano)amines
    Patent number: 6417381
    Abstract: A process is provided for preparing a bis(silylorgano)amine in which a cyanoorganosilane is reacted with hydrogen under hydrogenation conditions in the presence of a catalytically effective amount of hydrogenation catalyst selected from the group consisting of rhodium, ruthenium, palladium and platinum to produce the secondary aminoorganosilane.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: July 9, 2002
    Assignee: Crompton Corporation
    Inventors: Steven C. Gedon, Melinda Hale, Michael P. Reynolds, Russell E. Malz, Jr.
  • Process for preparing primary aminoorganosilanes
    Patent number: 6242627
    Abstract: A process is provided for preparing a primary aniinoorganosilane in which a cyanoorganosilane is reacted with hydrogen under hydrogenation conditions and in the substantial absence of water in the presence of a catalytically effective amount of sponge cobalt to produce the primary aminoorganosilane.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: June 5, 2001
    Assignee: Crompton Company
    Inventors: Steven Gedon, Melinda Hale