Patents by Inventor Daniel C. Marcktell

Daniel C. Marcktell 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).

  • Electrolyte and tin-silver electroplating process
    Patent number: 6210556
    Abstract: The invention relates to an electrolyte for depositing tin-rich tin-silver alloys upon a substrate. This electrolyte includes a basis solution containing a solution soluble tin and silver compounds; a tin chelating agent of a polyhydroxy compound in an amount sufficient to complex tin ions provided by the tin compound; and a silver chelating agent of a heterocyclic compound in an amount sufficient to complex silver ions provided by the silver compound. Preferably, the tin and silver compounds are present in relative amounts to enable deposits containing about 85 to 99% by weight tin and about 0.5 to 15% by weight silver to be obtained.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: April 3, 2001
    Assignee: Learonal, Inc.
    Inventors: Michael P. Toben, Daniel C. Marcktell, Neil D. Brown, Colleen A. Doyle