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:
Nov. 21, 1978
Filed:
Jan. 25, 1978
Applicant:
Inventors:
Susan R Jacob, Royersford, PA (US);
Patrick M Brown, Exton, PA (US);
Assignee:
Foote Mineral Company, Exton, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01D / ;
U.S. Cl.
CPC ...
4235 / ; 4231795 ;
Abstract
Lithium sulfide in the form of a finely divided, free-flowing powder of high purity is produced by reacting lithium carbonate powder in which the diameter of the particles is in the range of 1 to 10 microns with hydrogen sulfide at 500.degree. to 700.degree. C. Initial contact of the lithium carbonate with hydrogen sulfide takes place at a temperature substantially below the sintering temperature of lithium carbonate which is approximately 300.degree. to 400.degree. C.