Patents by Inventor Robert Furman

Robert Furman 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).

  • Polyester water-based defoamer
    Patent number: 6464828
    Abstract: Polyester water-based defoamers are prepared by reaction of a dimer fatty acid, a fatty acid and two different polyalkylene polyols, e.g. polypropylene glycol and polyethylene glycol. The resulting polyesters are readily dispersible in water to form a water-based macroemulsion in the absence of any oil or short chain alcohols. The macroemulsion is an effective defoamer in ground-wood and thermomechanical pulping operations.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: October 15, 2002
    Assignee: Callaway Chemical Corp.
    Inventor: Robert Furman
  • Polymeric defoamer compositions
    Patent number: 5152925
    Abstract: Polymeric defoamer compositions are prepared from hydroxyalkylacrylate or methacrylate containing polymers which are then solubilized in an organic carrier system. The polymers are effective defoamers and drainage aids for brown stock washers, screen rooms, and in other paper-making operations. The compositions, which may be petroleum oil-free, avoid many of the deleterious effects of conventional petroleum oil-based EBS defoamers.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: October 6, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Robert Furman