Patents by Inventor Massimo Parenti

Massimo Parenti 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 PREPARATION OF TAUROURSODESOXYCHOLIC ACID
    Publication number: 20100069654
    Abstract: The present invention relates to a novel method for preparing tauroursodeoxycholic acid which comprises a step of selective precipitation of the impurities present in the suspension obtained from the reaction of an aqueous solution of sodium taurinate with an acetonic solution of a mixed anhydride of ursodeoxycholic acid with an alkyl chloroformate.
    Type: Application
    Filed: March 26, 2008
    Publication date: March 18, 2010
    Inventor: Massimo Parenti
  • N-alkyl-taurourodeoxycholic acids and their therapeutically active derivatives
    Patent number: 5500421
    Abstract: The invention discloses N-alkyl-tauroursodeoxycholic acids and their pharmaceutically acceptable salts of the formula ##STR1## wherein R is a C.sub.2 -C.sub.4 alkyl group and R.sub.1 is hydrogen, an alkali metal, an alkaline earth metal or a radical of a basic amino acid.The compounds are prepared by reacting a mixed anhydride of ursodeoxycholic acid and alkyltaurine followed by percolation through two columns respectively containing a strong cationic resin in H.sup.+ form and a weakly anionic resin OH.sup.- form. The compounds are useful for the treatment of hepatic diseases.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: March 19, 1996
    Assignee: Prodotti Chimici Alimentari SPA
    Inventor: Massimo Parenti
  • Purification of tauroursodesoxycholic acid dihydrate
    Patent number: 5260462
    Abstract: Process for purification of tauroursodesoxycholic acid dihydrate prepared through reaction between taurine and mixed anhydride of ursodesoxycholic acid with an alkylcholoroformate using ion exchange resins.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: November 9, 1993
    Assignee: Prodotti Chimici E Alimentari S.P.A.
    Inventor: Massimo Parenti