Patents by Inventor Callixtus E. Ita

Callixtus E. Ita 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).

  • Piperidinyl carbonyl derivatives
    Patent number: 5106982
    Abstract: Novel compounds having the general formula ##STR1## wherein A and A' are amino acid residues linked by a peptidal bond to the nucleus, are disclosed. These compounds are CNS agents with anxiogenic activity.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: April 21, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Callixtus E. Ita, Peter Egli
  • Nitrobenzofuran derivatives
    Patent number: 4469870
    Abstract: Nitrobenzofurazan derivatives having the formula ##STR1## are provided wherein R.sub.1 and R.sub.2 each is hydrogen, lower alkyl or phenyl-lower alkyl; R.sub.3 is hydrogen, hydroxy or lower alkyl; R.sub.4 is hydrogen or lower alkyl; m is 2 or 3; and n is 0, 1 or 2; these compounds are useful analytical tools.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: September 4, 1984
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Callixtus E. Ita, Anthony F. Heald, Peter Egli
  • Nitrobenzofurazan derivatives
    Patent number: 4395556
    Abstract: Nitrobenzofurazan derivatives having the formula ##STR1## are provided wherein R.sub.1 and R.sub.2 each is hydrogen, lower alkyl or phenyl-lower alkyl; R.sub.3 is hydrogen, hydroxy or lower alkyl; R.sub.4 is hydrogen or lower alkyl; m is 2 or 3; and n is 0, 1 or 2; these compounds are useful analytical tools.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: July 26, 1983
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Callixtus E. Ita, Anthony F. Heald, Peter Egli