Patents by Inventor Leonard Cook

Leonard Cook 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).

  • 4-aryl-4-piperidine (or pyrrolidine or hexahydroazepine) carbinols and heterocyclic analogs thereof
    Patent number: 5019650
    Abstract: Known and novel 4-aryl-4-piperidinecarbinols and heterocyclic analogs are useful as analgesics. Also provided are novel pyrrolidinecarbinols and hexhydroazepine carbinols which are useful as analgesics, antidepressants and, in some cases, as anorectic agents.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: May 28, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Engelbert Ciganek, Leonard Cook