Patents by Inventor Brian Ribbons Fischwick

Brian Ribbons Fischwick 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).

  • Disperse azo dyestuffs derived from a 3-amino-7-azabenz-2,1-isothiazole diazo component
    Patent number: 4081435
    Abstract: The disperse monoazo dyestuffs, free from sulphonic acid groups, which are of the formula: ##STR1## wherein X is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, --NR.sup.1 R.sup.2, --SR.sub.3, chlorine, bromine --OR.sup.3 or --SO.sub.2 R.sup.3 ;Z is hydrogen, alkyl, substituted alkyl, aryl or substituted aryl;Y is hydrogen, nitro, cyano, --COOR.sup.3, --COR.sup.3, --CONR.sup.1 R.sup.2, --SO.sub.2 R.sup.3 or --SO.sub.2 NR.sup.1 R.sup.2 ;E is the residue of a coupling component;R.sup.1 is hydrogen, alkyl or aryl;R.sup.2 is hydrogen or alkyl; andR.sup.3 is alkyl or aryl,A process for the manufacture of the said dyestuffs, and their use for coloring synthetic textile materials.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: March 28, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Boyd Baird, Brian Ribbons Fischwick, James Stanley Campbell, Peter Smith