Patents by Inventor John Benjamin Enns

John Benjamin Enns 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).

  • Low oxygen molding of soft contact lenses
    Patent number: 5753150
    Abstract: A process for providing degassed complementary concave and convex lens molds to filling and mold assembly stations in a continuous or semicontinuous automated soft contact lens manufacturing system. The process includes injection molding the lens molds, immediately transferring the lens molds to an inert gas atmosphere, degassing the lens molds, and filling the lens molds with a polymerizable monomer under the inert gas prior to mold assembly.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: May 19, 1998
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Wallace Anthony Martin, Jonathan Patrick Adams, John Benjamin Enns, Ture Kindt-Larsen