Patents by Inventor Christopher Laurello

Christopher Laurello 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).

  • Tarnish deterring tin coating
    Publication number: 20050025990
    Abstract: The present invention is directed to a coated substrate, comprising: an antitarnish layer deposited on a substrate in an amount effective to prevent tarnishing of said coated substrate; and an outer layer deposited onto said antitarnish layer, said outer layer comprising tin or tin alloys having at least 50% by weight tin. The present invention is also directed to coated substrates having a concentration gradient of antitarnish agent diffused into the coating, as well as methods of forming such coated substrates.
    Type: Application
    Filed: August 31, 2004
    Publication date: February 3, 2005
    Inventors: Christopher Laurello, Derek Tyler, Szuchain Chen, Julius Fister
  • Tin coatings incorporating selected elemental additions to reduce discoloration
    Patent number: 6183886
    Abstract: A tin coated electrical or electronic component has enhanced resistance to oxidation and tarnishing as well a smaller increase in contact resistance when exposed to elevated temperatures. These benefits are achieved by depositing a relatively thin, on the order of 5-50 angstroms thick, layer of zinc on the tin coating prior to heating. A subsequent step of heating the sample to a temperature and time effective to convert all free tin to an intermetallic imparts the additional advantage of reducing the coefficient of friction.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 6, 2001
    Assignee: Olin Corporation
    Inventors: Szuchain Chen, Julius Fister, Christopher Laurello
  • Tin coatings incorporating selected elemental additions to reduce discoloration
    Patent number: 6136460
    Abstract: A method of introducing an anti-tarnish agent into the matrix of a tin coating to reduce oxidation and/or yellowing of the tin coating. The agent is preferably zinc, indium or phosphorous and can be deposited in a molten form to alloy with the existing tin coating. Alternatively, the existing tin coating may be exposed to a chemical bath including the agent and later heated to reflow the tin coating and agent thereby incorporating the agent into the matrix of the tin coating.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: October 24, 2000
    Assignee: Olin Corporation
    Inventors: Szuchain Chen, Julius Fister, Dennis Brauer, Arvind Parthasarathi, Christopher Laurello