Patents by Inventor Alan Kwasman

Alan Kwasman 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).

  • Quick screening for scotopic sensitivity syndrome
    Patent number: 5067806
    Abstract: A device permitting the rapid determination of scotopic sensitivity syndrome comprised of small cards with colored filters on visual test patterns. The filter's frequencies correspond to the receptor frequencies of the cones in the retina and their combinations.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: November 26, 1991
    Assignee: Alan Kwasman
    Inventor: Alan Kwasman
  • Reader for hematocrit value
    Patent number: 4163615
    Abstract: A device permitting the rapid and direct determination of red cell percentages in centrifuged blood samples comprised of a scale optically variable in length in combination with an adjustable holder for the blood containing capillary tube.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: August 7, 1979
    Inventor: Alan Kwasman