Patents by Inventor Alain Rainville

Alain Rainville 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).

  • Bi-focal corneal contact lens
    Patent number: 4813777
    Abstract: A bi-focal corneal lens of uniform index of refraction, which is self-orienting, which is cut on a lathe with a lenticular attachment, so that the various curves can be cut in a minimum of passes. Mathematical equations are furnished to be fed to a computer, which calculates the parameters of the various curves in accordance with the data furnished by the optician so as to provide a lens with a maximal optical zone and a minimal thickness.
    Type: Grant
    Filed: January 17, 1985
    Date of Patent: March 21, 1989
    Inventors: Alain Rainville, Bernard Beaulieu