Patents by Inventor Mario Ermoni

Mario Ermoni 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 improving the stability of etherified acetal homopolymers
    Patent number: 4158091
    Abstract: The thermal and chemical stability of etherified acetal homopolymers is improved by heat-treating the latter in the molten state at a temperature of at least 180.degree. C., in the presence of a halide of an alkali or alkaline earth metal, until substantially complete degradation of the unstable polyoxymethylene chains.
    Type: Grant
    Filed: January 17, 1978
    Date of Patent: June 12, 1979
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Pierino Radici, Sergio Custro, Mario Ermoni, Paolo Colombo
  • Process for improving the stability of etherified acetal homopolymers
    Patent number: 4105638
    Abstract: An etherified acetal homopolymer is stabilized by heat-treating said homopolymer suspended in a liquid diluent chosen from water or mixtures thereof with polar organic compounds, preferably in the presence of a basic compound, at a temperature of 100.degree.-160.degree. C and below the melting point of the homopolymer, thereby to substantially degrade the unstable fraction of said homopolymer.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: August 8, 1978
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Pierino Radici, Sergio Custro, Mario Ermoni, Paolo Colombo