Patents by Inventor Ma Isabel Crespo Crespo

Ma Isabel Crespo Crespo 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).

  • 1,2,4-triazolo(4,3-b)pyrido(3,2-d)pyridazine derivatives and pharmaceutical compositions containing them
    Patent number: 6407108
    Abstract: Heterocyclic compounds of formula(I), wherein R1 represents a hydrogen atom or a —(CH2)m—Y group, wherein m is an integer from 0 to 4 and Y represents an alkyl, haloalkyl, alkoxy, alkoxycarbonyl, C3-C7 cycloalkyl, norbornyl or phenylalkenyl group, or an aromatic group which aromatic group {circumflex over ( )} may optionally be substituted by one or more halogen atoms; R2 represents an aromatic group which aromatic group may optionally be substituted by one or more halogen atoms or alkyl, alkoxy, C3-C6 cycloalkoxy, methylenedioxy, nitro, dialkylamino or trifluoromethyl groups, and R3 represents a hydrogen or halogen atom or an alkyl group, and pharmaceutically acceptable salts thereof, processes for preparing the same are disclosed herein. The compounds are phosphodiesterase 4 inhibitors.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: June 18, 2002
    Assignee: Almirall Prodesfarma, S.A.
    Inventors: Jordi Gracia Ferrer, Ma Isabel Crespo Crespo, Armando Vega Noverola, Andres Fernandez Garcia