Gas Or Vapor Patents (Class 241/18)
To classify or separate material (Class 241/19)
  • Removal of built up layers of organic coatings
    Patent number: 3934379
    Abstract: A method for removal of layers of organic material built up on a support for articles during surface coating and treating comprising applying a liquefied inert gas to the support and/or preferably to the built up layers of organic material to cause embrittlement of the organic material and lessening of the bonded relation between the support and the built up layers, and then separating the embrittled built up layers from the support by abrasion of impact.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: January 27, 1976
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Norman R. Braton, Jan R. Acker