Fused glassy particulates obtained by flame fusion Grant US-6254981-B1 United States of America 03 Jul 2001
At least partly fused particulates and methods of making them by flame fusion Grant US-6045913-A United States of America 04 Apr 2000
Compositions comprising fused particulates and methods of making them Grant US-5883029-A United States of America 16 Mar 1999
Compositions comprising fused particulates and methods of making same Grant US-5641717-A United States of America 24 Jun 1997