Patents by Inventor Maarten Antoon Campman

Maarten Antoon Campman 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).

  • Equipment cleaning in the manufacture of polycarbonates
    Publication number: 20070135611
    Abstract: A surface of a melt polymerization reactor system having residual reaction components of a melt polymerization reaction thereon can be cleaned by introducing a cleaning agent having a phenolic compound to the polymerization reactor system and into contact with the surface of the melt polymerization reactor system having the residual reaction components of a melt polymerization reaction thereon. The residual reaction components of the melt polymerization reaction include polycarbonate oligomers or polymers or their degradation products. Further, the cleaning agent is maintained in contact with the surface for a period of time and at a temperature sufficient to substantially remove the residual reaction components from the surface.
    Type: Application
    Filed: December 12, 2005
    Publication date: June 14, 2007
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Hans-Peter Brack, Maarten Antoon Campman, Laurus van der wekke, Dennis Maria Willemse