Patents Examined by Joseph J. Schofer
  • Styrl-modified acrylate polymer pressure sensitive adhesive beads
    Patent number: 5728786
    Abstract: Styryl-modified acrylate polymer pressure sensitive adhesive beads, adhesive films made therefrom and methods of making the same. Surprisingly, the polymerization of styryl-functional monomer into bead formulations provides beads that can be easily extruded and made into adhesive films having high shear strength. The polymerization of styryl-functional monomer into bead formulations comprising methacrylic acid also obviates the need to use a modifier moiety.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: March 17, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Chung I. Young, Albert I. Everaerts, Stephen E. Krampe
  • Process and dye preparations for pad-dyeing
    Patent number: 4300900
    Abstract: A dye preparation containing at least one dye insoluble or difficultly soluble in water, an anionic or nonionic dispersing agent, at least one metal complex consisting of a polyvalent cation and at least one complexing agent, and optionally further additives, water and/or organic solvent.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: November 17, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Roland Putzar, Hans Fierz