Electric heating – Metal heating – By arc
Reexamination Certificate
2005-02-08
2005-02-08
Evans, Geoffrey S. (Department: 1725)
Electric heating
Metal heating
By arc
C347S224000, C427S483000, C427S555000, C427S556000
Reexamination Certificate
active
06852948
ABSTRACT:
A method of radiantly marking substrates including metals, plastics, ceramic materials, glazes, glass ceramics, and glasses of any desired form, which comprises electrostatically applying to the material to be marked a variable thickness layer of marking material containing energy absorbing components and/or enhancers, then irradiating said layer with a radiant energy source such as a laser or diode based energy source such that the radiation is directed onto said layer, optionally in accordance with the form of the marking to be applied, preferably using a laser or diode based energy source of a wavelength which is sufficiently absorbed by the marking material so as to create a bonding of the marking material to the surface of the workpiece at the irradiated areas.
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Authors: Karheinz Hahn, Claudia Buerhop, and Rudolf WeiBmann Title: “Finring PbO-free glass enamels using the cw-CO2 laser” Date: Received Nov. 11, 1995.
International Searching Authority, International Search Report, Aug. 9, 1998, 9 pages total.
Evans Geoffrey S.
Pepper Hamilton LLP
TherMark, LLC
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