Patents by Inventor Timothy A. Knell

Timothy A. Knell 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).

  • Laser marking method and apparatus
    Patent number: 6238847
    Abstract: A method of laser marking substrates such as glass, ceramic, metal and plastic is disclosed. A marking material is applied to the surface of the substrate, followed by irradiation of a portion of the marking material to form a permanent marking on the substrate. The non-irradiated portion of the marking material is then removed from the substrate. The marking material may comprise glass frit or precursors thereof, inorganic pigments or precursors thereof, silicates, metal oxides, sulfides, nitrides and carbides, organometallic materials or metal powders. The marking method is highly versatile, can be performed quickly, and produces permanent marks of high resolution and contrast without damage to the substrate.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: May 29, 2001
    Assignee: DMC Degussa Metals Catalysts Cerdec AG
    Inventors: Enos Ayres Axtell, III, David C. Kapp, Timothy A. Knell, Miroslav Novotny, George Emil Sakoske
  • Thermoplastic/thermoset table coatings or inks for glass ceramic and other hard surfaces
    Patent number: 5411768
    Abstract: Thermoplastic/thermosettable coatings or inks for glass, ceramic or other hard surfaces are provided. The coatings comprise a blend of epoxy resins and a curing agent for the blend which provides a latency period of about 30 minutes at the screening temperature for such composition. Additional components are added to the composition depending upon the desired use. The compositions are applied to the hard surface by a high temperature screening process and heat cured on the surface.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: May 2, 1995
    Assignee: Cerdec Corporation
    Inventors: Timothy A. Knell, Gilbert B. Burkhart, III
  • Thermoplastic/thermosettable coatings or inks for glass, ceramic and other hard surfaces
    Patent number: 5346933
    Abstract: Thermoplastic/thermosettable coatings or inks for glass, ceramic or other hard surfaces are provided. The coatings comprise a blend of epoxy resins and a curing agent for the blend which provides a latency period of about 30 minutes at the screening temperature for such composition. Additional components are added to the composition depending upon the desired use. The compositions are applied to the hard surface by a high temperature screening process and heat cured on the surface.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: September 13, 1994
    Assignee: Cerdec Corporation
    Inventor: Timothy A. Knell