US RE49,570 E1
Modified cellulose from chemical kraft fiber and methods of making and using the same
Arthur J. Nonni, Tallahassee, FL (US); Charles E. Courchene, Snellville, GA (US); Christopher Michael Slone, Memphis, TN (US); and Peter R. Abitz, Decatur, GA (US)
Assigned to GP Cellulose GmbH, Zug (CH)
Filed by GP Cellulose GmbH, Zug (CH)
Filed on Aug. 30, 2021, as Appl. No. 17/460,632.
Application 13/314,493 is a continuation of application No. 13/322,419, granted, now 8,778,136, issued on Jul. 15, 2014, previously published as PCT/US2010/036763, filed on May 28, 2010.
Application 17/460,632 is a reissue of application No. 13/314,493, filed on Dec. 8, 2011, granted, now 9,909,257, issued on Mar. 6, 2018.
Claims priority of provisional application 61/182,000, filed on May 28, 2009.
Int. Cl. D21H 11/20 (2006.01); A61F 13/53 (2006.01); D21H 11/04 (2006.01); D21C 9/14 (2006.01); D21C 9/16 (2006.01); D21C 9/10 (2006.01); D21H 11/16 (2006.01); D21C 9/00 (2006.01)
CPC D21H 11/20 (2013.01) [A61F 13/53 (2013.01); D21C 9/002 (2013.01); D21C 9/1036 (2013.01); D21C 9/144 (2013.01); D21C 9/163 (2013.01); D21H 11/04 (2013.01); D21H 11/16 (2013.01); Y10T 428/298 (2015.01)] 31 Claims
OG exemplary drawing
 
1. A bleached kraft fiber exhibiting an aldehyde content ranging from about 1 meq/100 g to about 9 meq/100 g, a carboxyl content of at least about 3 meq/100 g, a 0.5% capillary CED viscosity of less than about 10 mPa·s, an ISO brightness of at least about 88, and a length-weighted average fiber length of at least about 2 mm.