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Organic electroluminescent materials and devices

  • US 9,518,063 B2
  • Filed: 06/10/2015
  • Issued: 12/13/2016
  • Est. Priority Date: 01/16/2009
  • Status: Active Grant
First Claim
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1. A process comprising:

  • treating an acetic acid solution of an intermediate having the formula

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