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. 30, 1999
Filed:
Feb. 25, 1992
Applicant:
Inventors:
Marjorie M Hatter, Fullerton, CA (US);
Charles F Wong, Yorba Linda, CA (US);
Assignee:
Entek Corporation, Elkridge, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423414 ;
Abstract
Salts of tetrathiocarbonic acid are produced by a process in which a hydroxide, sulfur, carbon disulfide and hydrogen sulfide are reacted continuously. The salts are produced as aqueous solutions having concentrations of about 15 to about 55 percent by weight.