Patents by Inventor Edward S. Butlin

Edward S. Butlin 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).

  • Process for insert molding wet-shaving razor unit and unit made therefrom
    Patent number: 5318429
    Abstract: The present invention is a wet-shaving unit and a process for making same by injection molding. Additionally, the present invention provides an apparatus for molding the wet-shaving razor unit. The present invention is adaptable for addition to conventional razor blade manufacturing methods and existing manufacturing apparatus and facilities. Moreover, the present process results in a product which significantly reduces or eliminates entirely undesirable blade distortion and vibration.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: June 7, 1994
    Assignee: Warner-Lambert Company
    Inventors: C. Edward Butlin, deceased, Edward S. Butlin, William T. Conrad, Jr.
  • Process for insert molding wet-shaving razor unit
    Patent number: 5141694
    Abstract: The present invention is a wet-shaving unit and a process for making same by injection molding. The present invention is adaptable for addition to conventional razor blade manufacturing methods and existing manufacturing apparatus and facilities. Moreover, the present process results in a product which significantly reduces or eliminates entirely undesirable blade distortion and vibration.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: August 25, 1992
    Assignee: Warner-Lambert Company
    Inventors: C. Edward Butlin, Edward S. Butlin, William T. Conrad, Jr.