Patents by Inventor Gerard J. Letertre

Gerard J. Letertre 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 preparing 4-aminohex-5-ynoic acid
    Patent number: 4254284
    Abstract: Novel compounds of the following general formula are useful in the preparation of 4-aminohex-5-enoic acid and 4-aminohex-5-ynoic acid which are useful pharmacological agents: ##STR1## wherein R.sub.1 is hydroxy, amino, or tert-butoxy.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: March 3, 1981
    Assignee: Merrell Toraude et Compagnie
    Inventors: Maurice W. Gittos, Gerard J. Letertre
  • 2-Pyrrolidone compounds and processes for making same
    Patent number: 4235778
    Abstract: Novel compounds of the following general formula are useful in the preparation of 4-aminohex-5-enoic acid and 4-aminohex-5-ynoic acid which are useful pharmacological agents: ##STR1## wherein R.sub.1 is hydroxy, amino, or tert-butoxy.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: November 25, 1980
    Assignee: Merrell Toraude et Compagnie
    Inventors: Maurice W. Gittos, Gerard J. Letertre
  • Process for making 4-aminohex-5-enoic acid
    Patent number: 4178463
    Abstract: Novel compounds of the following general formula are useful in the preparation of 4-aminohex-5-enoic acid and 4-aminohex-5-ynoic acid which are useful pharmacological agents: ##STR1## wherein R.sub.1 is hydroxy, amino, or tert-butoxy.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: December 11, 1979
    Assignee: Merrell Toraude et Compagnie
    Inventors: Maurice W. Gittos, Gerard J. Letertre