Patents by Inventor Lawrence P. Carr

Lawrence P. Carr 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).

  • Silver coated particles and a process for preparing them
    Patent number: 4353741
    Abstract: Silver coated particles having high concentrations of metallic silver are produced which are useful in forming alloys with metals such as mercury. The process comprises admixing carrier particles with an aqueous solution of a silver salt to form a slurry. A hydrazine compound is added to the slurry to precipitate metallic silver on the carrier particles in a medium which becomes increasingly acidic. Silver coated particles having a metallic silver content up to 90 percent by weight of the coated particle can be produced in a single impregnation under conditions which prevent the formation of explosive by-products such as silver nitride. The silver coated particles are particularly suitable for the recovery of metals such as mercury from fluids.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: October 12, 1982
    Assignee: Olin Corporation
    Inventors: Italo A. Capuano, Lawrence P. Carr, Patricia A. Turley