Patents by Inventor Barry Leigh Shaw

Barry Leigh Shaw 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 making nicotinic acid hydrazides
    Patent number: 3951996
    Abstract: A process for condensing a carboxylic acid with ammonia, hydrazine or a substituted hydrazine or a primary or secondary amine to give a compound containing the group --CO--NR'-- where R' is a hydrogen atom, an organic radical, an NH.sub.2 group or a substituted NH.sub.2 group by the use of a catalyst having a formula M(OR).sub.n X.sub.(4.sub.-n) wherein M represents titanium or zirconium, R represents an alkyl or aryl radical, X represents a halogen atom and n is an integer from 1 to 4.
    Type: Grant
    Filed: December 12, 1973
    Date of Patent: April 20, 1976
    Assignee: British Titan Limited
    Inventors: Robert Holroyd Stanley, Barry Leigh Shaw