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. 03, 2004
Filed:
Jun. 06, 2001
Applicant:
Inventors:
Assignee:
Maxim LLC, Pasadena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/42 ;
U.S. Cl.
CPC ...
C02F 1/42 ;
Abstract
A method of removing both Sr and Cs from an alkaline solution having a pH between about 9 to 14 includes providing a keratin protein from essentially a fiber portion separated from a quill portion of a poultry feather. A slurry is made of the keratin protein and the alkaline solution and is treated ultrasonically. The Sr and Cs may each be present in the alkaline solution at least at about 5 ppb. The keratin protein is contacted with the Sr and Cs by mechanical agitation at a temperature between about 20 to 90° C. and at a pressure not greater than about 10 psi. A supernatant produced in the step of contacting is then filtered.