Metallizing Engineering Co., Inc. v. Kenyon Bearing & Auto Parts Co., Inc. (JWB Class)

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The Case

  • Process to treat a metal surface – spray on surface bonds better due to conditioning
  • Issue for public use: things produced by this process were in public use, but never the process itself
  • Held: public sale/use of output of process more than one year prior to the application is a statutory bar (patent void)


  • Machine, not the process it performs, is the invention