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:
Apr. 28, 1987
Filed:
Nov. 18, 1985
Applicant:
Inventors:
Bernard Boudot, Paris, FR;
Philippe Nataf, Paris, FR;
Assignee:
Rhone-Poulenc Specialites Chimiques, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423348 ; 423349 ;
Abstract
A powder of elemental silicon having high purity and a density in excess of about 0.6 g/cm.sup.3, preferably ranging from 0.8 to 1.2 g/cm.sup.3, and which is non-amorphous as determined by X-ray analysis, is facilely prepared by thermally decomposing a silane feedstream at a decomposition reaction temperature ranging from 500.degree. to 700.degree. C., preferably from 500.degree. to 600.degree. C.