Patents by Inventor Juan Retolaza Ibarguengoitia

Juan Retolaza Ibarguengoitia 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 for improving frictional surface in cylinders or sleeves of internal combustion engines
    Patent number: 4065365
    Abstract: Method of preparing chromium plated surfaces of improved anti-friction property, by machining the base material to a smooth finish, chromium plating the machined surface of the base material, heating the chromium plated surface at 150.degree.-325.degree. C for 1-3 hours, cooling and honing the surface, and lapping the surface with an abrasive to a surface finish such that the roughness of the surface measures 25-50 micro-inches center line average.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: December 27, 1977
    Assignee: Aplicaciones Industriales de Cromo Duro, S.A.
    Inventor: Juan Retolaza Ibarguengoitia