Patents by Inventor Donna M. Ferber

Donna M. Ferber 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).

  • Genetic control of acetylation and pyruvylation of xanthan based polysaccharide polymers
    Publication number: 20020103370
    Abstract: Variant xanthan gums are provided which include a water-soluble polysaccharide polymer comprising repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a water-soluble polysaccharide polymer comprising repeating tetramer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:1:1. The D-glucose moieties are linked in a beta-[1,4] configuration. The inner D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties. The D-glucuronic acid moieties are linked in a beta-[1,2] configuration to the inner mannose moieties. The outer mannose moieties are linked to the glucuronic acid moieties in a beta-[1,4] configuration. Processes for preparing the polysaccharide polymers are also provided.
    Type: Application
    Filed: November 13, 2001
    Publication date: August 1, 2002
    Inventors: Daniel H. Doherty, Donna M. Ferber, John D. Marrelli, Rebecca W. Vanderslice, Randal A. Hassler
  • Genetic control of acetylation and pyruvylation of xanthan based polysaccharide polymers
    Patent number: 6316614
    Abstract: Variant xanthan gums are provided which include a water-soluble polysaccharide polymer comprising repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a water-soluble polysaccharide polymer comprising repeating tetramer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:1:1. The D-glucose moieties are linked in a beta-[1,4] configuration. The inner D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties. The D-glucuronic acid moieties are linked in a beta-[1,2] configuration to the inner mannose moieties. The outer mannose moieties are linked to the glucuronic acid moieties in a beta-[1,4] configuration. Processes for preparing the polysaccharide polymers are also provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 13, 2001
    Assignee: CP Kelco U.S., Inc.
    Inventors: Daniel H. Doherty, Donna M. Ferber, John D. Marrelli, Rebecca W. Vanderslice, Randal A. Hassler
  • Genetic control of acetylation and pyruvylation of xanthan based polysaccharide polymers
    Patent number: 5514791
    Abstract: Variant xanthan gums are provided which include a water-soluble polysaccharide polymer comprising repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a water-soluble polysaccharide polymer comprising repeating tetramer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:1:1. The D-glucose moieties are linked in a beta- 1,4! configuration. The inner D-mannose moieties are linked in an alpha- 1,3! configuration, generally to alternate glucose moieties. The D-glucuronic acid moieties are linked in a beta- 1,2! configuration to the inner mannose moieties. The outer mannose moieties are linked to the glucuronic acid moieties in a beta- 1,4! configuration. Processes for preparing the polysaccharide polymers are also provided.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: May 7, 1996
    Assignee: Getty Scientific Development Company
    Inventors: Daniel H. Doherty, Donna M. Ferber, John D. Marrelli, Rebecca W. Vanderslice, Randal A. Hassler