Patents by Inventor Pietro Molla

Pietro Molla 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 the purification of phosphorus pentasulphide by distillation under vacuum
    Patent number: 4374706
    Abstract: Process for the purification of phosphorus pentasulphide by means of distillation under vacuum at a residual pressure of about 6 mmHg and carried out according to a "thermal profile" comprising, immediately before and immediately after the liquid-vapor-liquid double passage of state, two stationary stages wherein said pentasulphide is maintained in the liquid state at a temperature very close to the boiling temperature of the pentasulphide itself.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: February 22, 1983
    Assignee: Saffa S.p.A.
    Inventor: Pietro Molla