Breaking News

Abrasive Toothpaste Patented by Alcan

November 15, 2005

Patent No. US 6,682,717 B1: Alcan International Ltd., Montreal, Canada, patented an abrasive toothpaste with alumina particles that are at least 90% α-alumina calcined at a temperature of at least 900° C.
blog comments powered by Disqus