Patents by Inventor Anthony G. Baxter

Anthony G. Baxter 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).

  • Water-soluble copper phthalocyanine dyes free from cellulose reactive groups
    Patent number: 4634555
    Abstract: A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein R.sup.1 is --(C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n H,R.sup.2 is H or --(C.sub.a H.sub.2a O).sub.m (C.sub.b H.sub.2b O).sub.n H, orR.sup.1 and R.sup.2 together with the nitrogen atom form a morpholine ringa and b are different and from 1 to 8m is from 1 to 10;n is from 0 to 9;Y is the residue of a copper phthalocyanine sulphonic acid of the formula:CuPc(SO.sub.3 M).sub.qp is from 1 to 3q is from 1 to 3p+q is from 3 to 4M is H, ammonium, or a monovalent metal;X is NR.sup.1 R.sup.2, alkoxy, NR.sup.3 R.sup.4 in which R.sup.3 and R.sup.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: January 6, 1987
    Assignee: Imperial Chemical Industries PLC
    Inventors: Anthony G. Baxter, Stephen B. Bostock, David Greenwood