Patents by Inventor Eric R. Claussen

Eric R. Claussen 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: 4733959
    Abstract: An apparatus and method for tinting hydrophilic contact lenses wherein a base having at least one post whose remote end is shaped for receiving and positioning a hydrophilic contact lens, and at least one cap which when placed in communication with the post and the lens masks one or more predetermined areas of the lens, is assembled with a lens positioned on the end of a post which is then capped. The assembly is immersed in a dye bath and then removed therefrom when the lens has attained the desired color, after which the assembly is placed in a fixing solution such that the lens is tinted permanently and fluid transport and oxygen permeability are unaffected.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: March 29, 1988
    Assignee: Optatint, Inc.
    Inventors: Eric R. Claussen, William C. Hoffman, Lawrence A. Smith