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:
Aug. 07, 2001
Filed:
Sep. 01, 1999
Applicant:
Inventors:
William Lawrence Geigle, West Chester, PA (US);
Steve Irwin Gleich, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C 1/912 ;
U.S. Cl.
CPC ...
B02C 1/912 ;
Abstract
An apparatus for breaking and separating particles preferably having a mathematical average length to diameter ratio of 1.0 to 4.0, and compositions comprising such particles. The apparatus comprises a cylindrical screen (,) and a hub (,). Upon relative rotation of the screen (,) and the hub (,), reject particles are flung radially outwardly and expelled through openings (,) in the screen (,).