Patents by Inventor Samuel Graham Stevens

Samuel Graham Stevens 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).

  • System and method for processing multiple polymer component articles for recycling
    Patent number: 9132430
    Abstract: A system and method for separating polymer components of a multi-component article, such as a shoe, is presented. The described system and method exploits the differences in embrittlement and glass transition temperature of different polymer components of the multi-component article by cryogenically freezing the prepared article and impacting the article such that one polymer component is pulverized without substantially fracturing the remaining portion of the article. The system and method further includes a re-looping capability to maximize separation and recovery of polymer components.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: September 15, 2015
    Assignee: NIKE, Inc.
    Inventors: Simon William Lofts, Samuel Graham Stevens, Nathiel Egosi