Patents by Inventor Stefan Kull

Stefan Kull 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).

  • Publication number: 20110287365
    Abstract: A backside coating is applied to lithographic printing plate precursors and this coating provides sufficient protection so that adjacent precursors are not scratched or otherwise damaged when stacked. The backside coating is readily dissolved during processing or development at a pH of at least 6.5 after the precursors are imaged.
    Type: Application
    Filed: May 19, 2010
    Publication date: November 24, 2011
    Inventors: Oliver Piestert, Harald Baumann, Stefan Kull
  • Patent number: 5642117
    Abstract: The process of converting a digital data word having N-bits into an analog voltage value includes decrementing or incrementing a counter word (B) having N-bits from a respective maximum or minimum value to form a series of decremented or incremented values, synchronizing the decrementing or incrementing of the counter word (B) to a time course of an analog reference voltage (U.sub.ramp) having a ramp-shaped time dependence, evaluating a logical connection function of the decremented or incremented values of the counter word (B) with a digital data word (A) to determine when one of the decremented or incremented values of the counter word (B) is equal to a complement of the digital data word (A) and setting an output analog voltage value (U.sub.column) equal to the analog reference voltage (U.sub.ramp) as soon as the decremented or incremented value of counter word (B) equal to the complement of data word (A) is reached.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: June 24, 1997
    Inventors: Ernst Luder, Stefan Kull