Patents by Inventor Rolf Hugo

Rolf Hugo 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).

  • Patent number: 7445273
    Abstract: A scratch resistant coated article is provided which is also resistant to attacks by at least some fluoride-based etchant(s) for at least a period of time. In certain example embodiments, an anti-etch layer(s) is provided on the glass substrate in order to protect the glass substrate from attacks by fluoride-based etchant(s). In certain example embodiments, the anti-etch layer(s) is substantially transparent to visible light. In certain embodiments, a DLC layer(s) may be provided over the anti-etch layer. An underlayer may be provided under the anti-etch layer(s) in certain example embodiments.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: November 4, 2008
    Assignee: Guardian Industries Corp.
    Inventors: Vljayan S. Veerasamy, Scott V. Thomsen, Nestor P. Murphy, Rolf Hugo Petrmichl
  • Patent number: 4278919
    Abstract: The horizontal frequency control pulses of, respectively, increasing and decreasing pulse widths required by switches which control the transfer of energy from the horizontal output stage to the vertical deflection coils are furnished by a first and second comparator. Each of the comparators is a difference amplifier having an inverting and a direct input. The inverting input of the first comparator is connected only through a resistor to the output of a vertical frequency sawtooth generator and, similarly, only through a resistor, to the output of a stage which furnishes horizontal deflection frequency pulses having slanted pulse tops. The direct input of the second comparator is also connected, through a decoupling resistor only, to the output of the vertical sawtooth generator and, while its inverting input is connected to the output of the stage which furnishes the shaped horizontal frequency pulses.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: July 14, 1981
    Assignee: Blaupunkt-Werke GmbH
    Inventors: Rolf Hugo, Wilfried Schiller