Patents by Inventor Alan Kravetz

Alan Kravetz 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: 5483339
    Abstract: A handheld portable spectrophotometer is provided including keys for input of instructions by a user, an illuminator for illuminating a sample, and a spectral analyzer for separating light reflected from the sample into spectral components to produce a signal corresponding to the level of each spectral component. A processor is provided for executing the user instructions and for analyzing the signal. The results of the signal analysis are presented on a display. A power source is provided for providing power for operation of the handheld portable spectrophotometer.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: January 9, 1996
    Assignee: Killmorgen Corporation
    Inventors: Harold Van Aken, Alan Kravetz, Kenneth Garde, William Weber, Joseph Corrado
  • Patent number: 5319437
    Abstract: A handheld portable spectrophotometer is provided including keys for input of instructions by a user, an illuminator for illuminating a sample, and a spectral analyzer for separating light reflected from the sample into spectral components to produce a signal corresponding to the level of each spectral component. A processor is provided for executing the user instructions and for analyzing the signal. The results of the signal analysis are presented on a display. A power source is provided for providing power for operation of the handheld portable spectrophotometer.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: June 7, 1994
    Assignee: Kollmorgen Corporation
    Inventors: Harold Van Aken, Alan Kravetz, Kenneth Garde, William Weber, Joseph Corrado
  • Patent number: 5179423
    Abstract: A method and apparatus for stabilizing the gain of a self scanned photo-diode array is provided for use with spectrophotometers and other light measurement equipment. A gain stabilizer light emitting diode (LED) constantly illuminates the array so that photons are continuously impinging upon the self-scanned photo-diode array. In the course of a typical measurement sequence, an illuminated scan is first taken, wherein said photo-diode array is illuminated by LED and the light being analyzed, followed by a dark reading wherein the photo diode array is illuminated by the LED only. The dark reading measurement is then subtracted from the illuminated reading to derive an accurate reading of the light being analyzed.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: January 12, 1993
    Assignee: Kollmorgen Corporation
    Inventors: Alan Kravetz, Harold Van Aken, Kenneth Garde
  • Patent number: D338417
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 17, 1993
    Assignee: Kollmorgen Corporation
    Inventors: Harold Van Aken, Alan Kravetz, Kenneth Garde, William Weber, Joseph Corrado