Patents by Inventor Luciano Bassignani

Luciano Bassignani 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).

  • Mesoporous crystalline solid compound of a diphosphonate/phosphite of a tetravalent metal, with a narrow distribution of mesopores
    Patent number: 5166380
    Abstract: The present invention discloses a compound comprising a diphosphonate/phosphite of a tetravalent metal:M[(O.sub.3 P--R--PO.sub.3).sub.1-(x+y) (HPO.sub.3).sub.2X (O.sub.3 P--R--PO.sub.3 H.sub.2).sub.2y ](where M, R, x and y have the meaning given in the description), in the form of a crystalline solid with an alpha-type lamellar structure with a distance between layers of 7.4 to 20.ANG. (depending on the dimensions of radical R), a BET surface area of 250 to 400m.sup.2 /g, and porosity within the mesopore range, with at least 50% of the pores measuring 20 to 30.ANG.. The compound, depending on the radical R used, may or may not have microporosity in the region between layers. Such a diphosphonate/phosphite of a tetravalent metal is obtained by reaction between diphosphonic acid, phosphorous acid and an oxyhalide of a tetravalent metal, in a solvent comprising dimethyl-sulphoxide/water containing hydrofluoric acid.
    Type: Grant
    Filed: August 1, 1991
    Date of Patent: November 24, 1992
    Assignee: Eniricerche S.p.A.
    Inventors: Giulio Alberti, Umberto Costantino, Riccardo Vivani, Piergiorgio Zappelli, Antonio Rossodivita, Luciano Bassignani
  • 5,6-Dehydropenicillins
    Patent number: 4353825
    Abstract: A method is disclosed for the preparation of a class of dehydropenicillins by irradiating substituted 4-acylmethylthio-2-azetidinones and subsequently subjecting the as-obtained product to cyclization. Processing conditions and analytical data are reported.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: October 12, 1982
    Assignee: Snamprogetti, S.p.A.
    Inventors: Luciano Re, Alberto Brant, Luciano Bassignani
  • Method of preparation of 5,6-dehydropenicillins
    Patent number: 4288366
    Abstract: A method is disclosed for the preparation of a class of dehydropenicillins by irradiating substituted 4-acylmethylthio-2-azetidinones and subsequently subjecting the as-obtained product to cyclization. Processing conditions and analytical data are reported.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: September 8, 1981
    Assignee: Snamprogetti, S.p.A.
    Inventors: Luciano Re, Alberto Brant, Luciano Bassignani
  • Process for preparing alpha-oxo-esters
    Patent number: 4232169
    Abstract: An operationally simple and economical process for preparing alpha-oxoesters is provided by reacting an acetylenic compound of formulaR--C.tbd.C--OR'with an oxidizing mixture composed of osmium tetroxide and an alkaline or alkaline earth chlorate and recovering the osmium tetroxide at the end of the reaction.
    Type: Grant
    Filed: April 24, 1979
    Date of Patent: November 4, 1980
    Assignee: Snamprogetti S.p.A.
    Inventors: Luciano Re, Alberto Brandt, Luciano Bassignani
  • 4-Thioxo-2-azetidinones
    Patent number: 4133807
    Abstract: A method is disclosed for the preparation of a class of dehydropenicillins by irradiating substituted 4-acylmethylthio-2-azetidinones and subsequently subjecting the as-obtained product to cyclization. Processing conditions and analytical data are reported.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: January 9, 1979
    Assignee: Snamprogetti, S.p.A.
    Inventors: Luciano Re, Alberto Brant, Luciano Bassignani