Patents by Inventor Brian Bothwell

Brian Bothwell 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).

  • Substituted pyrazoline having non-linear optical properties
    Patent number: 4894186
    Abstract: A compound of the formula: ##STR1## wherein E is an ethenyl group of the formula: ##STR2## in which X is H when Y is NO.sub.2 ;Y is H when X is NO.sub.2 ; orX is CN when Y is CNwhich has the capacity to form a crystal in which the molecules are aligned substantially in the same manner giving it non-linear optical properties. The crystalline product is thus adapted for use in devices exhibiting non-linear optical effects.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: January 16, 1990
    Assignee: Imperial Chemical Industries PLC
    Inventors: Paul F. Gordon, Brian Bothwell
  • 1-phenyl-3-(2-nitroethenyl)pyrazoline and 1-phenyl-3-(2,2-dicyanoethenyl)pyrazoline
    Patent number: 4780543
    Abstract: A compound of the formula: ##STR1## wherein E is an ethenyl group of the formula: ##STR2## in which X is H when Y is NO.sub.2 ;Y is H when X is NO.sub.2 ; orX is CN when Y is CNwhich has the capacity to form a crystal in which the molecules are aligned substantially in the same manner giving it non-linear optical properties. The crystalline product is thus adapted for use in devices exhibiting non-linear optical effects.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: October 25, 1988
    Assignee: Imperial Chemical Industries PLC
    Inventors: Paul Gordon, Brian Bothwell