Patents by Inventor Albertus van Cleeff

Albertus van Cleeff 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).

  • Fluoroelastomer latex
    Patent number: 6169139
    Abstract: A fluoroelastomer latex is produced that is capable of forming films having excellent water resistance. In a first step, polymerization of fluorinated monomers is carried out in the presence of fluorinated surfactants at a pH of 3-8. The pH of the resultant fluoroelastomer emulsion composition is then adjusted to 5-9 and the emulsion is concentrated to yield a solids-rich latex.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: January 2, 2001
    Assignee: DuPont Dow Elastomers LLC
    Inventor: Albertus van Cleeff