Patents by Inventor Ken Johns

Ken Johns 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).

  • Cross-linking of thermosetting resins by means of heating with saturated perfluoropolyether vapor in the presence of a secondary fluid
    Patent number: 4977222
    Abstract: The cross-linking or curing of thermosetting resins and of hot curable elastomers is carried out by heating the material or the article comprising the resin (or the elastomer) by saturated vapor of the commercial perfluoropolyether having an average boiling point corresponding to the temperature necessary for the cross-linking and having a point range not exceeding 12.degree. C. (measured according to ASTM D 1078) in the presence of a chlorofluorohydrocarbon secondary vapor.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: December 11, 1990
    Assignee: Ausimont S.p.A.
    Inventors: Gianangelo Bargigia, Alberto Re, Luigi Corbelli, Ken Johns, Luciano Flabbi, Padmanabhan Srinivasan
  • Process for curing thermosetting resins by means of a liquid heat transmitter
    Patent number: 4874842
    Abstract: The present invention relates to a method for hot curing thermosetting resins and vulcanizable elastomers, based on the use of perfluoropolyethers in the liquid state as heat transfer media.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: October 17, 1989
    Assignee: Ausimont S.p.A.
    Inventors: Ken Johns, Alberto Re, Gianangelo Bargigia