Patents by Inventor Paolo Alessandrini

Paolo Alessandrini 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).

  • Radial engine
    Patent number: 7240648
    Abstract: A four-stroke radial engine comprises cylinders arranged radially with respect to a driving shaft of said radial engine and pistons associated with said cylinders, said pistons being connected to said driving shaft by means of respective connecting rods which are rotatably supported on a same crank pivot of said driving shaft.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: July 10, 2007
    Inventor: Paolo Alessandrini
  • Radial engine
    Publication number: 20060130780
    Abstract: A four-stroke radial engine comprises cylinders arranged radially with respect to a driving shaft of said radial engine and pistons associated with said cylinders, said pistons being connected to said driving shaft by means of respective connecting rods which are rotatably supported on a same crank pivot of said driving shaft.
    Type: Application
    Filed: February 20, 2004
    Publication date: June 22, 2006
    Inventor: Paolo Alessandrini
  • p-Si/n-CdS Heterojunction photovoltaic cells
    Patent number: 4366337
    Abstract: The invention provides photovoltaic cells of new design in which the two semiconductors have lattice parameters which differ by more than 5%. The n-type semiconductor material is constituted by high conductivity CdS doped with indium in a percentage higher than 1%, and the p-type semiconductor material is constituted by Si. The active surface of said cells is equal to or greater than 1.5 cm.sup.2.
    Type: Grant
    Filed: August 13, 1980
    Date of Patent: December 28, 1982
    Assignee: E.N.I. Ente Nazionale Idrocarburi
    Inventors: Paolo Alessandrini, Lucio De Angelis, Fabrizio Galluzzi, Francesco Losciale, Ernesto Scafe'