Patents by Inventor Fernando Calvo

Fernando Calvo 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).

  • Citric acid salt of (+) vinpocetine
    Patent number: 4749707
    Abstract: A (+) citrate salt of vinpocetine, and a procedure for preparing the salt, is disclosed. The salt is useful as a medicinal agent in cerebral-vascular disorders and in neurological treatments relating to cerebral oxygenation, especially in elderly persons.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: June 7, 1988
    Assignee: Covex, S.A.
    Inventors: Fernando Calvo, Maria T. Manresa
  • Process for synthesizing codeinone from thebaine
    Patent number: 4052402
    Abstract: Codeinone is prepared by reacting thebaine with a hydrogen halide, under anhydrous conditions, in the presence of iodine as a catalyst, at a temperature of less than 10.degree. C, hydrolyzing the reaction product and recovering codeinone.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: October 4, 1977
    Assignee: Fabrica de Productos Quimicos y Farmaceuticos Abello, S.A.
    Inventor: Fernando Calvo