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:
Jan. 28, 2003
Filed:
Oct. 24, 2000
Applicant:
Inventors:
Mark Dietz, Elmhurst, IL (US);
E. Philip Horwitz, Naperville, IL (US);
Assignee:
Arch Development Corp., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/26 ;
U.S. Cl.
CPC ...
C02F 1/26 ;
Abstract
An extractant medium for extracting alkaline earth cations from an aqueous acidic sample solution is described as are a method and apparatus for using the same. The separation medium is free of diluent, free-flowing and particulate, and comprises a Crown ether that is a 4,4′(5′)[C -C -alkylcyclohexano]18-Crown-6 dispersed on an inert substrate material.