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:
Dec. 27, 2011
Filed:
Apr. 10, 2007
Joseph A. Pomykala, Jr., Shorewood, IL (US);
Bassam J. Jody, Tinley Park, IL (US);
Edward J. Daniels, Orland Park, IL (US);
Jeffrey S. Spangenberger, Plainfield, IL (US);
Scott T. Lockwood, Joliet, IL (US);
Joseph A. Pomykala, Jr., Shorewood, IL (US);
Bassam J. Jody, Tinley Park, IL (US);
Edward J. Daniels, Orland Park, IL (US);
Jeffrey S. Spangenberger, Plainfield, IL (US);
Scott T. Lockwood, Joliet, IL (US);
UChicago Argonne, LLC, Chicago, IL (US);
Abstract
Enhanced methods for separating of overlapping density porous materials are provided. The methods of the invention exploit the differences in the porosity of porous feed materials compared to that of the solid plastics. In the first stage, air is forced out of the pores of a porous feed material. In the second stage, a solution, having the appropriate density, is forced into the pores. This increases the density of the porous material relative to the density of the solid plastics. As a result, the porous material can be made to sink, while the solid plastics continue to float.