Patents by Inventor Ralph Wisner

Ralph Wisner 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).

  • Process for removing deleterious surface material from polymeric regrind particles
    Patent number: 6262133
    Abstract: A process for removing deleterious surfaces from polymeric regrind particles in which the polymeric regrind particles such as TPO, PC/ABS, PC/PBT, PA/PP or PA/PPO having a surface material deleterious to post-treatment processes is contacted by an aqueous attritive environment for an interval sufficient to accomplish dissociation of the deleterious surface material from contact with the polymeric regrind particulate substrate and removal of less than 10% of the total mass of polymeric regrind particulate substrate. After sufficient contact between the attritive environment and the polymeric regrind particles, the polymeric regrind particulate substrate is separated from the attritive environment and the retained dissociated deleterious surface material.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: July 17, 2001
    Assignee: American Commodities, Inc.
    Inventor: Ralph Wisner