The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 1984
Filed:
Oct. 18, 1983
Jean M Lalancette, Sherbrooke, CA;
Hugues Hamelin, Saint-L/e/ onard, CA;
Societe Nationale de L'Amiante, Quebec, CA;
Abstract
A light colored and asbestos free granular material of the invention is suitable for use as lightweight fillers in plastics and is derived from asbestos tailings wherein the MgO:SiO.sub.2 ratio is at least 1.0, said granular material comprising particles consisting of a mixture of enstatite, forsterite and silica having a particle size of from -400 to -10 mesh, said particles being coated with a silicate bonded layer of calcium oxide or magnesium oxide or mixtures thereof, said particles being further characterized by having a density of from 17 to 25 lb/ft.sup.3 and having a degree of whiteness within the range of from 50 to 60 when measured by the ASTM Procedure No. E-97-77.