Patents by Inventor Michael J. Paretchan

Michael J. Paretchan 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).

  • Razor blade technology
    Patent number: 6866894
    Abstract: A razor blade including a substrate with a cutting edge defined by a sharpened tip and adjacent facets, a layer of hard coating on the cutting edge, an overcoat layer of a chromium containing material on the layer of hard carbon coating, and an outer layer of polytetrafluoroethylene coating over the overcoat layer. Also disclosed is a method of making a razor blade including providing a substrate with a cutting edge defined by a sharpened tip and adjacent facets, and applying an aqueous solution including polytetrafluoroethylene coating over the sharpened tip to result in an outer layer, the polytetrafluoroethylene having a molecular weight of about 45,000.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: March 15, 2005
    Assignee: The Gillette Company
    Inventors: Hoang Mai Trankiem, Michael J. Paretchan, Colin Clipstone, Steve Syng-Hi Hahn, Neville Sonnenberg, Charles White, Andrew Zhuk, Kevin P. McDonough
  • Razor blade technology
    Publication number: 20030096060
    Abstract: A razor blade including a substrate with a cutting edge defined by a sharpened tip and adjacent facets, a layer of hard coating on the cutting edge, an overcoat layer of a chromium containing material on the layer of hard carbon coating, and an outer layer of polytetrafluoroethylene coating over the overcoat layer. Also disclosed is a method of making a razor blade including providing a substrate with a cutting edge defined by a sharpened tip and adjacent facets, and applying an aqueous solution including polytetrafluoroethylene coating over the sharpened tip to result in an outer layer, the polytetrafluoroethylene having a molecular weight of about 45,000.
    Type: Application
    Filed: July 10, 2002
    Publication date: May 22, 2003
    Inventors: Hoang Mai Trankiem, Michael J. Paretchan, Colin Clipstone, Steve Syng-Hi Hahn, Neville Sonnenberg, Charles White, Andrew Zhuk, Kevin P. McDonough