Patents by Inventor Viktor Stopar

Viktor Stopar 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).

  • High-precision ophthalmometer which is independent of distance
    Patent number: 4410242
    Abstract: An ophthalmometer measurement system employs two flat glass plates which move in opposite pivoted directions, to determine the distance between two mirror images on the cornea. The pivot suspensions and pivotal-displacement mechanism are free of play and account for a three-fold improvement in precision of measurement. Provision is made for adjustment to compensate for manufacturing tolerances, in glassplate thickness and mechanical-parts manufacture.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: October 18, 1983
    Assignee: Carl Zeiss-Stiftung
    Inventors: Ortwin Muller, Kurt Schulz, Viktor Stopar