Patents by Inventor Charles A. Lundberg, Jr.

Charles A. Lundberg, Jr. 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).

  • 2-Amino-11b-aryl-benzo[a]quinolizines
    Patent number: 4321382
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, a straight or branched chain alkyl of 1-5 carbon atoms or a straight or branched chain alkanoyl of 1-5 carbon atoms;R.sub.2 is hydrogen, a straight or branched chain alkyl of 1-5 carbon atoms, phenyl, phenyl substituted with halogen, a straight or branched chain alkoxy of 1-5 carbon atoms, a straight or branched chain alkyl of 1-5 carbon atoms or trifluoromethyl or, when R.sub.1 is hydrogen, R.sub.2 can also be a straight or branched chain alkanoyl of 1-5 carbon atoms; orR.sub.1 and R.sub.2 taken together with the nitrogen atom to which they are attached form a saturated heterocyclic ring of 4-7 total ring atoms and 0 or 1 hetero N or O atom in addition to the connecting N atom; or the corresponding heterocyclic ring substituted by a C.sub.1-5 straight or branched chain alkyl group, aryl or aralkyl;R.sub.
    Type: Grant
    Filed: August 10, 1979
    Date of Patent: March 23, 1982
    Assignee: Richardson-Merrell Inc.
    Inventors: Charles A. Lundberg, Jr., Robert A. Farr