Patents by Inventor Michael Ernst Rohmann

Michael Ernst Rohmann 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).

  • Paper coating compositions from polymers of olefinically unsaturated monomers
    Patent number: 3957710
    Abstract: Paper coating compositions with finely divided pigment, optical brightener and a binder containing a copolymer of from 5 to 30% by weight of mono-olefinically unsaturated carboxylic acids, from 5 to 30% by weight of mono-olefinically unsaturated monomers containing basic nitrogen atoms and from 50 to 80% by weight of other olefinically unsaturated monomers which, when polymerized alone, give water-insoluble homopolymers and cause virtually no reduction in the effect of conventional optical brighteners even in the absence of casein or carboxymethyl cellulose.
    Type: Grant
    Filed: September 18, 1974
    Date of Patent: May 18, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Ernst Rohmann, Kurt Wendel