Weerawarna; S. Ananda

Patent Applications and Registrations

Patent applications and USPTO patent grants for Weerawarna; S. Ananda.The latest application filed is for "fibrillated blend of lyocell low dp pulp".

Company Profile

0.37.55

Weerawarna; S. Ananda - Seattle WA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Fibrillated Blend Of Lyocell Low Dp Pulp App 20180105985 - Westland; John A. ; et al.	2018-04-19
Fibrillated blend of lyocell low DP pulp Grant 9,845,575 - Westland , et al. December 19, 2	2017-12-19
Multi-stage catalytic carboxylation of mercerized cellulose fibers Grant 9,328,459 - Weerawarna May 3, 2	2016-05-03
Internally curing cement based materials Grant 9,056,792 - Weerawarna , et al. June 16, 2	2015-06-16
Fibrillated blend of lyocell and cellulosic low DP pulp Grant 8,894,812 - Westland , et al. November 25, 2	2014-11-25
Multi-stage Catalytic Carboxylation Of Mercerized Cellulose Fibers App 20140290882 - Weerawarna; S. Ananda	2014-10-02
Fiber for fiber cement and resulting product Grant 8,791,178 - Weerawarna , et al. July 29, 2	2014-07-29
Catalytic carboxylation of cellulose fibers in a continuous process with multiple additions of catalyst, secondary oxidant and base to a moving slurry of cellulose fibers Grant 8,641,863 - Weerawarna February 4, 2	2014-02-04
Method for making biodegradable superabsorbent particles Grant 8,641,869 - Weerawarna February 4, 2	2014-02-04
Fiber For Fiber Cement And Resulting Product App 20130338269 - Weerawarna; S. Ananda ; et al.	2013-12-19
Fiber for fiber cement and resulting product Grant 8,461,233 - Weerawarna , et al. June 11, 2	2013-06-11
Catalytic Carboxylation Of Cellulose Fibers In A Continuous Process With Multiple Additions Of Catalyst, Secondary Oxidant And Base To A Moving Slurry Of Cellulose Fibers App 20130081768 - Weerawarna; S. Ananda	2013-04-04
Fiber for Fiber Cement and Resulting Product App 20130005859 - Weerawarna; S. Ananda ; et al.	2013-01-03
Internally curing cement based materials App 20130000523 - Weerawarna; S. Ananda ; et al.	2013-01-03
Fibrillated Blend Of Lyocell And Cellulosic Low Dp Pulp App 20120285640 - Westland; John A. ; et al.	2012-11-15
Biodegradable superabsorbent particles Grant 8,101,543 - Weerawarna January 24, 2	2012-01-24
Fibers having biodegradable superabsorbent particles attached thereto Grant 8,084,391 - Weerawarna December 27, 2	2011-12-27
Method for making biodegradable superabsorbent particles Grant 7,959,762 - Weerawarna June 14, 2	2011-06-14
Fibrillated Blend Of Lyocell Low Dp Pulp App 20100288456 - Westland; John A. ; et al.	2010-11-18
Method for making fiber having biodegradable superabsorbent particles attached thereto Grant 7,833,384 - Weerawarna November 16, 2	2010-11-16
Superabsorbent particles containing carboxyalkyl cellulose and temporary metal crosslinks Grant 7,785,710 - Weerawarna , et al. August 31, 2	2010-08-31
Fibrous blend and method of making Grant 7,749,317 - Weerawarna , et al. July 6, 2	2010-07-06
Methods for the preparation of mixed polymer superabsorbent fibers containing cellulose Grant 7,717,995 - Weerawarna , et al. May 18, 2	2010-05-18
Methods for the preparation of superabsorbent particles containing carboxyalkyl cellulose Grant 7,645,806 - Weerawarna , et al. January 12, 2	2010-01-12
Method for Making Fiber Having Biodegradable Superabsorbent Particles Attached Thereto App 20090321030 - Weerawarna; S. Ananda	2009-12-31
Method For Making Biodegradable Superabsorbent Particles App 20090321029 - Weerawarna; S. Ananda	2009-12-31
Method for Making Biodegradable Superabsorbent Particles App 20090324731 - Weerawarna; S Ananda	2009-12-31
Fibers Having Biodegradable Superabsorbent Particles Attached Thereto App 20090325800 - Weerawarna; S. Ananda	2009-12-31
Biodegradable Superabsorbent Particles App 20090325799 - Weerawarna; S Ananda	2009-12-31
Biodegradable Superabsorbent Particles Containing Cellulose Fiber App 20090326180 - Weerawarna; S. Ananda	2009-12-31
Biodegradable Superabsorbent Particles App 20090325797 - Weerawarna; S. Ananda	2009-12-31
Methods for the preparation of fibrous superabsorbent composite containing cellulose Grant 7,625,463 - Weerawarna , et al. December 1, 2	2009-12-01
Crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks Grant 7,608,167 - Luo , et al. October 27, 2	2009-10-27
Methods for the preparation of crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks Grant 7,604,714 - Luo , et al. October 20, 2	2009-10-20
Fibrous blend and methods of preparation Grant 7,591,891 - Weerawarna , et al. September 22, 2	2009-09-22
Method for making carboxyalkyl cellulose Grant 7,541,396 - Luo , et al. June 2, 2	2009-06-02
Fibrous blend and method of making App 20080314537 - Weerawarna; S. Ananda ; et al.	2008-12-25
Mixed polymer composite fiber and cellulose fiber App 20080318772 - Weerawarna; S. Ananda ; et al.	2008-12-25
Method of making a mixed polymer composite fiber and cellulose fiber App 20080319108 - Weerawarna; S. Ananda ; et al.	2008-12-25
Fibrous blend and methods of preparation App 20080319107 - Weerawarna; S. Ananda ; et al.	2008-12-25
Mixed polymer superabsorbent fibers Grant 7,455,902 - Weerawarna , et al. November 25, 2	2008-11-25
Crosslinked mixed carboxylated polymer network Grant 7,393,905 - Weerawarna July 1, 2	2008-07-01
Methods for the preparation of crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks App 20080147033 - Luo; Mengkui ; et al.	2008-06-19
Methods for the preparation crosslinked carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks App 20080147032 - Luo; Mengkui ; et al.	2008-06-19
Absorbent articles comprising carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks App 20080082069 - Qin; Jian ; et al.	2008-04-03
Methods for the preparation of superabsorbent particles containing carboxyalkyl cellulose App 20080081843 - Weerawarna; S. Ananda ; et al.	2008-04-03
Mixed polymer superabsorbent fibers App 20080081190 - Weerawarna; S. Ananda ; et al.	2008-04-03
Methods for the preparation of fibrous superabsorbent composite containing cellulose App 20080078515 - Weerawarna; S. Ananda ; et al.	2008-04-03
Superabsorbent particles containing carboxyalkyl cellulose App 20080081191 - Weerawarna; S. Ananda ; et al.	2008-04-03
Fibrous superabsorbent composite containing cellulose App 20080081165 - Weerawarna; S. Ananda ; et al.	2008-04-03
Mixed Polymer Superabsorbent Fibers And Method For Their Preparation App 20080081189 - Weerawarna; S. Ananda ; et al.	2008-04-03
Cellulose fibers having superabsorbent particles adhered thereto App 20080082067 - Weerawarna; S. Ananda ; et al.	2008-04-03
Methods for the preparation of mixed polymer superabsorbent fibers App 20080079188 - Weerawarna; S. Ananda ; et al.	2008-04-03
Methods for the preparation of mixed polymer superabsorbent fibers containing cellulose App 20080079187 - Weerawarna; S. Ananda ; et al.	2008-04-03
Methods for the preparation of cellulose fibers having superabsorbent particles adhered thereto App 20080078514 - Weerawarna; S. Ananda ; et al.	2008-04-03
Crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks App 20080082064 - Luo; Mengkui ; et al.	2008-04-03
Crosslinked carboxyalkyl cellulose fibers having non-permanent and temporary crosslinks App 20080082066 - Luo; Mengkui ; et al.	2008-04-03
Absorbent articles comprising carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks App 20080082068 - Qin; Jian ; et al.	2008-04-03
Mixed polymer superabsorbent fibers containing cellulose App 20080082065 - Weerawarna; S. Ananda ; et al.	2008-04-03
Mixed polymer network Grant 7,300,965 - Weerawarna , et al. November 27, 2	2007-11-27
Method of crosslinking a mixture of carboxylated polymers using a triazine crosslinking activator Grant 7,241,836 - Weerawarna July 10, 2	2007-07-10
Method of crosslinking a carboxylated polymer using a triazine crosslinking activator Grant 7,230,049 - Weerawarna June 12, 2	2007-06-12
Hypochlorite free method for preparation of stable carboxylated carbohydrate products Grant 7,135,557 - Weerawarna , et al. November 14, 2	2006-11-14
Hypochlorite free method for preparation of stable carboxylated carbohydrate products Grant 7,109,325 - Komen , et al. September 19, 2	2006-09-19
Mixed polymer network App 20060142479 - Weerawarna; S. Ananda ; et al.	2006-06-29
Method for making sulfoalkylated cellulose polymer network App 20060142477 - Glasser; Wolfgang G. ; et al.	2006-06-29
Method of crosslinking a mixture of carboxylated polymers using a triazine crosslinking activator App 20060142482 - Weerawarna; S. Ananda	2006-06-29
Sulfoalkylated Cellulose Polymer Network App 20060142484 - Glasser; Wolfgang G. ; et al.	2006-06-29
Method for making carboxyalkyl cellulose App 20060137838 - Luo; Mengkui ; et al.	2006-06-29
Crosslinked carboxylated polymer App 20060142476 - Weerawarna; S. Ananda	2006-06-29
Method of crosslinking a carboxylated polymer using a triazine crosslinking activator App 20060142483 - Weerawarna; S. Ananda	2006-06-29
Crosslinked mixed carboxylated polymer network App 20060142434 - Weerawarna; S. Ananda	2006-06-29
Carboxyalkyl cellulose polymer network App 20060142478 - Luo; Mengkui ; et al.	2006-06-29
Method for making a mixed polymer network App 20060142481 - Herriott; Carole W. ; et al.	2006-06-29
Apparatus for making carboxylated pulp fibers Grant 7,001,483 - Severeid , et al. February 21, 2	2006-02-21
Hypochlorite free method for preparation of stable carboxylated carbohydrate products Grant 6,919,447 - Komen , et al. July 19, 2	2005-07-19
Apparatus for making carboxylated pulp fibers App 20050028952 - Severeid, David E. ; et al.	2005-02-10
Methods for making carboxylated cellulosic fibers App 20050028292 - Weerawarna, S. Ananda ; et al.	2005-02-10
Methods for making carboxylated pulp fibers App 20050028953 - Severeid, David E. ; et al.	2005-02-10
Method for making piperidone ketals using polyphosphoric acid Grant 6,852,860 - Weerawarna , et al. February 8, 2	2005-02-08
Hypochlorite free method for preparation of stable carboxylated carbohydrate products App 20050014669 - Weerawarna, S. Ananda ; et al.	2005-01-20
Hypochlorite free method for preparation of stable carboxylated carbohydrate products App 20040266728 - Komen, Joseph Lincoln ; et al.	2004-12-30
Method for making piperidone ketals using polyphosphoric acid App 20040192920 - Weerawarna, S. Ananda ; et al.	2004-09-30
Hypochlorite free method for preparation of stable carboxylated carbohydrate products App 20030083491 - Komen, Joseph Lincoln ; et al.	2003-05-01
Method for preparation of stabilized carboxylated cellulose App 20030051834 - Weerawarna, S. Ananda ; et al.	2003-03-20

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