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:
Feb. 15, 1977
Filed:
Jun. 02, 1975
Applicant:
Inventors:
Kent W Loest, Broomfield, CO (US);
Vernon R Ewing, Denver, CO (US);
Assignees:
Southwire Company, Carrollton, GA (US);
National Steel Corporation, Pittsburgh, PA (US);
Earth Sciences, Inc., Golden, CO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ; C01F / ; C01F / ;
U.S. Cl.
CPC ...
423120 ; 423305 ; 423313 ; 423127 ; 423629 ; 423181 ;
Abstract
A process for the production of monobasic potassium phosphate from wet process phosphoric acid and potassium sulfate by ion exchange. The application of the process is the production of monobasic potassium phosphate by ion exchange from wet phosphoric acid produced by the reaction of sulfuric acid on apatite rock and by-product potassium sulfate from processes for the recovery of aluminum from alunite.