Patents by Inventor Leone Dall'Asta

Leone Dall'Asta 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).

  • Diacetylrhein salts and their therapeutical use in the treatment of arthrosis
    Patent number: 4950687
    Abstract: A therapeutic treatment for the athrosis diseases comprising administering by intraarticular route from 1 to 5 ml of an aqueous solution containing from 10 to 50 mg of a diacetyl rhein salt having formula (I): ##STR1## wherein M represents an alkali or an earth alkali metal or the residue of an organic base.The diacetyl rhein salts administered by intraarticular route exhibit higher pharmacological activity than the corresponding diacetylrhein administered orally.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: August 21, 1990
    Assignee: Proter S.p.A.
    Inventors: Leone Dall'Asta, Germano Coppi, Mario Ercole Scevola
  • Process for producing 2,4-diamino-(3,5-dimethoxy-4-methoxyethoxy-benzyl)-pyrimidine
    Patent number: 4485248
    Abstract: A process for preparing Tetroxoprim starting from 3,5-dimethoxy-4-methoxyethoxy-benzaldehyde and 2,4-diamino-6-hydroxy-pyrimidine, by successive hydrogenation, halogenation and hydrogenolysis of the 2,4-diamino-6-oxo-5-(3,5-dimethoxy-4-methoxyethoxy-benzylidene)-pyrimidine obtained in the initial reaction.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: November 27, 1984
    Assignee: Proter S.p.A.
    Inventor: Leone Dall'Asta
  • Process for the conversion of penicillin S-oxide into a corresponding desatoxycephalosporin
    Patent number: 3959266
    Abstract: A penicillin S-oxide is rearranged into the corresponding desacetoxycephalosporin compound by heating said penicillin S-oxide at a temperature of from 70 to 140.degree.C in the presence of a sulfoxide of formula R.sup.1 -SO-R.sup.2, preferably dimethyl sulfoxide, or a sulfonium or sulfoxonium salt of said sulfoxyde or a mixture of said sulfoxide and said sulfonium or sulfoxonium salt. The sulfoxide may act as reaction medium as well as reactant or an inert organic solvent may be used as a reaction medium.
    Type: Grant
    Filed: June 22, 1973
    Date of Patent: May 25, 1976
    Assignee: Societe Anonyme dite: CLIN-MIDY
    Inventor: Leone Dall'Asta