Patents by Inventor Karen L. Zazzara

Karen L. Zazzara 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).

  • Publication number: 20140315720
    Abstract: A method for producing a polysaccharide ester microsphere may include forming a polysaccharide ester product from a polysaccharide synthesis, wherein the polysaccharide ester product comprises a polysaccharide ester and a solvent; diluting the polysaccharide ester product, thereby yielding a polysaccharide ester dope; and forming a plurality of polysaccharide ester microspheres from the polysaccharide ester dope. Suitable polysaccharides may include, but are not limited to, starch, cellulose, hemicellulose, algenates, chitosan, and any combination thereof. Esters thereof may be organic esters (e.g., acetate and the like), inorganic esters (e.g., sulfonates and the like), or combinations thereof. Further, the solids conent of the polysaccharide ester dope, in some instances, may be greater than about 16 wt %.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 23, 2014
    Applicant: Celanese Acetate LLC
    Inventors: Denis G. Fallon, Thomas S. Garrett, Lawton E. Kizer, Karen L. Zazzara, Michael T. Combs, Richard K. Johnson, Gary Dehart
  • Publication number: 20140113826
    Abstract: A method for producing a polysaccharide ester microsphere may include forming a polysaccharide ester product from a polysaccharide synthesis, wherein the polysaccharide ester product comprises a polysaccharide ester and a solvent; diluting the polysaccharide ester product, thereby yielding a polysaccharide ester dope; and forming a plurality of polysaccharide ester microspheres from the polysaccharide ester dope. Suitable polysaccharides may include, but are not limited to, starch, cellulose, hemicellulose, algenates, chitosan, and any combination thereof. Esters thereof may be organic esters (e.g., acetate and the like), inorganic esters (e.g., sulfonates and the like), or combinations thereof. Further, the solids conent of the polysaccharide ester dope, in some instances, may be greater than about 16 wt %.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: Celanese Acetate LLC
    Inventors: Denis G. Fallon, Thomas S. Garrett, Lawton E. Kizer, Karen L. Zazzara, Michael T. Combs, Richard K. Johnson, Gary Dehart
  • Patent number: 4983730
    Abstract: Water soluble cellulose acetate composition having improved processability and tensile properties suitable for application as films, coatings and fibers and comprising one or more lower molecular weight water soluble cellulose acetate components and one or more higher molecular weight water soluble cellulose acetate components, and wherein the lower molecular weight water soluble cellulose acetate components have solution viscosities at least 20 percent of that of the higher molecular weight water soluble cellulose acetate components. An exemplary composition comprises from about 85 to 98 percent by weight of a lower molecular weight water soluble cellulose acetate component having a solution viscosity of form about 5 to 50 cps and from about 15 to 2 percent by weight of a higher molecular weight water soluble cellulose acetate component having a solution viscosity of greater than 100 cps.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: January 8, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Kenneth A. Domeshek, Karen L. Zazzara