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:
May. 28, 2002
Filed:
Sep. 19, 2000
Applicant:
Inventors:
Klaus Doelle, Menasha, WI (US);
Werner Witek, Appleton, WI (US);
Oliver U. Heise, Menasha, WI (US);
Bangji Cao, Appleton, WI (US);
Assignee:
Voith Sulzer Paper Technology North America, Inc., Appleton, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 5/02 ; B03D 1/02 ;
U.S. Cl.
CPC ...
D21C 5/02 ; B03D 1/02 ;
Abstract
A flotation machine is provided which includes at least one flotation cell having an inner chamber. The fiber suspension is transported into the inner chamber, and a gas is injected into the fiber suspension within the inner chamber at a temperature above 100° C. to decrease the density of the wax within the fiber suspension. The wax is removed from the fiber suspension.