Patents by Inventor John Blocha

John Blocha 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).

  • Methods and apparatus for producing ophthalmic lenses
    Patent number: 5320006
    Abstract: An initial curvature is cut into a lens blank in a lens making machine, such as a lathe, and the curvature is subsequently finished by a finishing tool. The finishing tool has curve characteristics which correspond to those of a prescription within a prescribed tolerance. The curvature of the finishing tool is measured on a digital gauge, and those measurements are fed to a digital controller which actuates the lathe. As a result, an initial curvature is cut into the lens blank having characteristics which correspond to those of the finishing tool. The finishing operation can thus be performed more quickly, since less material needs to be removed from the initial curvature during the finishing operation.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: June 14, 1994
    Assignee: Coburn Optical Industries, Inc.
    Inventors: John Blocha, Ronald T. Hyslop