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. 26, 1982
Filed:
May. 21, 1981
Applicant:
Inventors:
Jean M Lalancette, Sherbrooke, CA;
Jacques Dunnigan, Sherbrooke, CA;
Assignee:
Societe Nationale de l'Amiante, Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
162-3 ; 106306 ; 162 80 ; 162153 ; 423167 ; 427255 ; 428443 ; 501 95 ;
Abstract
There is disclosed chemically modified chrysotile asbestos fibers, more particularly phosphated asbestos fibers containing from 0.5 to 5% by weight of phosphate groups and heat treated phosphated asbestos fibers, both of which have an infrared spectrum which exhibits substantially no absorption within the range of 954-1080 cm.sup.-1. The novel phosphated asbestos fibers are characterized by reduced haemolytic and cytotoxic activities.