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Filter element having laser marked plastic components

  • US 5,798,037 A
  • Filed: 04/04/1997
  • Issued: 08/25/1998
  • Est. Priority Date: 03/21/1995
  • Status: Expired due to Fees
First Claim
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1. A filter element including a filter medium incorporated in an assembly having at least one plastic component, the at least one plastic component having a first portion comprising a material which chances color when exposed to laser energy to produce markings having a color different from the color of the at least one plastic component.

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