Patents by Inventor Ralph E. Peterson

Ralph E. Peterson 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 making a golf ball product from fast-curling reaction injection molded polyurethane
    Patent number: 7067081
    Abstract: Golf ball products are made by reaction injection molding (RIM) fast curing thermoset polyurethane compounds. A polyurethane prepolymer and a curing agent are mixed and injected at low temperature and pressure into a closed mold where the reaction mixture gels. The mold is opened and the golf ball product is removed within 10–60 seconds after the injection step.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: June 27, 2006
    Assignee: Wilson Sporting Goods Co
    Inventors: Frank M. Simonutti, Richard D. Matheny, Ralph E. Peterson
  • Method of making a golf ball product from fast-curing reaction injection molded polyurethane
    Publication number: 20020016435
    Abstract: Golf ball products are made by reaction injection molding (RIM) fast curing thermoset polyurethane compounds. A polyurethane prepolymer and a curing agent are mixed and injected at low temperature and pressure into a closed mold where the reaction mixture gels. The mold is opened and the golf ball product is removed within 10-60 seconds after the injection step.
    Type: Application
    Filed: January 12, 2001
    Publication date: February 7, 2002
    Inventors: Frank M. Simonutti, Richard D. Matheny, Ralph E. Peterson
  • Apparatus, system, and method for processing photothermographic elements
    Patent number: 6007971
    Abstract: An apparatus, system, and method for processing photothermographic elements. The apparatus thermally develops a photothermographic element by heating the photothermographic element between a heated member, having a resilient layer, and a plurality of rollers. The apparatus can be a component of other apparatus and systems including those having the ability to expose the photothermographic element to form a latent image.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: December 28, 1999
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Paul C. Star, John A. Svendsen, Alfredo G. Viglienzoni, John J. Allen, Michael P. Juaire, Anderson L. Griffin, John O. Kirkwold, Steven W. Sorensen, Ralph E. Peterson
  • Seal ring and method of manufacture
    Patent number: 4328972
    Abstract: A sealing ring having a U-shaped shell member and an actuator member formed in situ from liquid elastomer. The shell member has a base portion with two legs extending from the base to form a cavity therebetween which is filled with the liquid elastomer and cured in situ. This integrally formed U-shaped composite ring seal yields a highly reliable seal with minimal dimensional variation problems and is easy and economical to manufacture.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: May 11, 1982
    Assignee: Parker-Hannifin Corporation
    Inventors: Kenneth R. Albertson, Ralph E. Peterson
  • Carrying case for chess articles or the like
    Patent number: D256522
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: August 26, 1980
    Inventor: Ralph E. Peterson