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:
Jul. 17, 2012
Filed:
Aug. 29, 2008
Applicants:
Jerry D. Gargulak, Ringle, WI (US);
Lori L. Bushar, Weston, WI (US);
Inventors:
Jerry D. Gargulak, Ringle, WI (US);
Lori L. Bushar, Weston, WI (US);
Assignee:
LignoTech USA, Inc., Rothschild, WI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03D 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are compositions and methods for separating gangue material from metallic sulfide ores. The compositions typically include a lignosolfonate and do not include a cyanide salt. Suitable lignosulfonates may include lignosulfonates, for example hardwood lignosulfonate having a weight average molecular weight of about 3 kDa to about 12 kDa and having a relatively low sulfur content and a relatively low sulfonate content.