Patents by Inventor Maresco Marini

Maresco Marini 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).

  • 1-Amino-pyrazolic derivatives
    Patent number: 3944563
    Abstract: 1-AMINO-5-ALKOXY-PYRAZOLE COMPOUNDS OF THE FORMULA: ##EQU1## wherein R.sub.1 represents a lower alkyl group having 1 to 4 carbon atoms, R.sub.2 and R.sub.3, which may be identical or different, represent a hydrogen atom, a lower alkyl group, a phenyl group, a phenyl group substituted by one or more groups selected from lower alkyl, halogen, nitro and lower alkoxy; R.sub.4 represents an amino group, a mono-lower alkyl amino group or a di-lower alkyl amino group; as well as their salts with a mineral or organic acid.A method for the preparation thereof, consisting essentially in internally transforming, in the presence of hydrazine, a 5-hydrazino-isoxazole (or 5-halogenoisoxazole) derivative and alkylating the 5-hydroxy-derivative obtained with a suitable diazoalkane.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: March 16, 1976
    Assignee: Etablissements Nativelle, S.A.
    Inventors: Giorgio Adembri, Piero Tedeschi, Fabio Ponticelli, Maresco Marini