Patents by Inventor Raymond Ruhlin

Raymond Ruhlin 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).

  • Method of forming an opthalmic lens from a synthetic material blank
    Patent number: 5100590
    Abstract: In a method of forming an ophthalmic lens from a synthetic material blank, in particular from a polycarbonate material, the blank is placed horizontally in a mold having optically finished molding surfaces. It is then subjected to a molding force at raised temperature in an oven. The mold has an upper molding surface that is part of a shell member adapted to slide freely in a ring. The molding force is limited to the static force due to the weight of the shell member, optionally increased by the weight of a pre-load mass surmounting the shell member.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: March 31, 1992
    Assignee: Essilor International Cie Generale d'Optique
    Inventor: Raymond Ruhlin