Patents by Inventor Philip I. Brittain

Philip I. Brittain 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).

  • Patent number: 4371694
    Abstract: Compounds of Formula I or Formula II ##STR1## where A is an electron withdrawing group and B is a secondary or tertiary amino group or the group OD where D is H, aryl or an aliphatic group are made by reacting a corresponding compound of Formula Ia or Formula IIa ##STR2## in a solvent with a reagent selected from organic primary and secondary amines and compounds of the formula MOD where M is an alkali metal and A and D are as defined above. In this process the nitro group and the group B in Formula I and Ia are in the 2- or 4- position and the compounds of Formula I, Ia, II and IIa may optionally be further substituted. Preferably a primary or secondary amine is reacted with a compound of formula Ia, preferably using dimethylformamide as solvent. The process can result in the production of novel compounds, including (1) Compounds of Formula III wherein each group A is CO.sub.
    Type: Grant
    Filed: July 1, 1980
    Date of Patent: February 1, 1983
    Assignee: Brent Chemicals International Limited
    Inventors: Michael S. Alexiou, Philip I. Brittain, John H. P. Tyman
  • Patent number: 4160375
    Abstract: A water washable, wash resistant biodegradable dye penetrant composition is described. It comprises one or more dyes and at least 70% of a substantially linear primary alcohol ethoxylate containing 2 to 4.5 ethoxy groups per molecule.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: July 10, 1979
    Assignee: Brent Chemicals International Limited
    Inventors: Philip I. Brittain, Michael R. J. Lyons