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Microspheres of melamine

  • US 6,291,632 B1
  • Filed: 06/19/2000
  • Issued: 09/18/2001
  • Est. Priority Date: 12/10/1998
  • Status: Expired due to Fees
First Claim
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1. Microspheres of polymerized melamine formaldehyde resin in spherical form with the microspheres having particle size in a range of 5-15 microns.

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