Patents by Inventor Mario A. Rivas

Mario A. Rivas 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).

  • Dipeptides having a methionine residue and possessing a protective action for the liver
    Patent number: 4460601
    Abstract: Dipeptides are claimed which consist of a mercaptoalkanoic acid and a derivative of said acid, namely an S-alkyl-, aralkyl-, aryl-, acyl- or aroyl derivative with methionine, a methionine ester or a methionine amide, as well as their salts with metallic cations and organic bases. These compounds have the property of protecting the liver against intoxications and have sedative and hypnotic properties.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: July 17, 1984
    Assignee: Maggioni Farmaceutici, S.p.A.
    Inventors: Giampaolo Picciola, Franco Ravenna, Mario Riva
  • Steroids and process for preparing the same
    Patent number: 4390533
    Abstract: The present invention relates to 2-chloro-6.beta.-fluoro-pregna-1,4-diene-3,20-diones having good anti-inflammatory activity, to processes for their preparation and pharmaceutical compositions thereof.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: June 28, 1983
    Assignee: Pierrel, S.p.A.
    Inventors: Mario Riva, Luciano Toscano
  • Steroids and process for preparing the same
    Patent number: 4275061
    Abstract: The present invention relates to 2-chloro-6.beta.-fluoropregna-1,4-diene-3,20-diones having good anti-inflammatory activity, to processes for their preparation and pharmaceutical compositions thereof.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: June 23, 1981
    Assignee: Pierrel S.p.A.
    Inventors: Mario Riva, Luciano Toscano
  • Steroids and process for preparing the same
    Patent number: 4272446
    Abstract: Novel steroids are described together with processes of making them and pharmaceutical compositions containing them. The steroids have pharmaceutical activity, especially antiinflammatory activity. They are all 2-Bromo-6.beta.-fluoro-pregna-1,4-diene-3,20-diones.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: June 9, 1981
    Assignee: Pierrel S.p.A.
    Inventors: Mario Riva, Luciano Toscano
  • Steroids and process for preparing the same
    Patent number: 4226862
    Abstract: Novel steroids are described together with processes of making them and pharmaceutical compositions containing them. The steroids have pharmaceutical activity, especially anti-inflammatory activity. They are all 2-Bromo-6.beta.-fluoro-pregna-1,4-diene-3,20-diones.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: October 7, 1980
    Assignee: Pierrel S.p.A.
    Inventors: Mario Riva, Gaetano Palladino, Lucian Toscano
  • Substituted 6,7-dihydro [1,7-ab](1) benzazepine compounds
    Patent number: 4013679
    Abstract: This invention relates to compounds of the formula: ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different and include hydrogen, methyl, and benzyl, their method of preparation, and pharmaceutical compositions containing these compounds.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: March 22, 1977
    Assignee: Pierrel S.p.A.
    Inventors: Mario Riva, Luciano Toscano, Giampiero Grisanti, Alberto Bianchetti