John A Westland

US Patent:

6500947, Dec 31, 2002

Filed:

Aug 24, 2001

Appl. No.:

09/939182

Inventors:

Hugh West - Seattle WA
John A. Westland - Auburn WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

C07H 100

US Classification:

5361231, 536 30, 536 56, 536 57

Abstract:

The present invention provides a polymer derived from a cellulosic, lignocellulosic, or polysaccharide material having superabsorbent properties. Methods for making the polymer and personal care absorbent products that incorporated the polymer are also provided.

US Patent:

6572919, Jun 3, 2003

Filed:

Aug 30, 2001

Appl. No.:

09/943902

Inventors:

John A. Westland - Auburn WA
Colin Elston - Gig Harbor WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

B32B 3124

US Classification:

427179, 156152, 156167, 156180, 156296

Abstract:

A crosslinkable cellulosic fibrous product that includes cellulosic fibers and a crosslinking agent is disclosed. The crosslinkable cellulosic fibrous product can be formed as a web or sheet that has structural integrity and sheet strength sufficient to permit the fibrous web to be rolled, transported, and used in rolled form in subsequent processes. The crosslinkable fibrous product can be converted into a crosslinked fibrous product by subjecting the product to conditions sufficient to effect intrafiber crosslinking. Alternatively, the web can be fiberized and the resulting individual crosslinkable fibers combined with other fibers and/or other materials to provide a fibrous web containing crosslinkable cellulosic fibers. Subjecting such a web to crosslinking conditions provides a fibrous web that includes, in addition to other fibers or materials, crosslinked cellulosic fibers.

US Patent:

6620865, Sep 16, 2003

Filed:

Aug 5, 2002

Appl. No.:

10/213205

Inventors:

John A. Westland - Auburn WA
Richard A. Jewell - Bellevue WA
Amar N. Neogi - Seattle WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

C08L 102

US Classification:

524 13, 524 14, 524 35, 525 5421, 525 5423, 1621572, 1621576, 162158

Abstract:

Cellulosic fibers intrafiber crosslinked with a polymeric polycarboxylic acid crosslinking agent are disclosed. In one embodiment, the polymeric polycarboxylic acid is polyacrylic acid and, in another embodiment, the polycarboxylic acid is polymaleic acid. Methods for forming cellulosic fibers having stable intrafiber crosslinks and for forming crosslinked cellulosic fibers having low knot level are also disclosed.

US Patent:

6951933, Oct 4, 2005

Filed:

Aug 5, 2002

Appl. No.:

10/213210

Inventors:

Hugh West - Seattle WA, US
John A. Westland - Auburn WA, US

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

C07H001/00

US Classification:

5361231, 536 30, 536 56, 536 57, 536124

Abstract:

The present invention provides a polymer derived from a cellulosic, lignocellulosic, or polysaccharide material having superabsorbent properties. Methods for making the polymer and personal care absorbent products that incorporated the polymer are also provided.

US Patent:

7390566, Jun 24, 2008

Filed:

Jun 30, 2006

Appl. No.:

11/427927

Inventors:

Mengkui Luo - Auburn WA, US
John A. Westland - Auburn WA, US

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

B32B 23/00

US Classification:

428393, 428354, 428375

Abstract:

Pulp with a high hemicellulose level is blended with a dissolving grade pulp and converted to viscose. Blending can be performed during steeping or after steeping. Spinning of the viscose containing the blend, into filaments yields fibers with strength properties that are at least equal to those of the dissolving pulp alone.

US Patent:

8273174, Sep 25, 2012

Filed:

Dec 31, 2008

Appl. No.:

12/347501

Inventors:

Sherry L Thomson - Normandy Park WA, US
David J O'Callaghan - Bonney Lake WA, US
John A Westland - Auburn WA, US
Bing Su - Federal Way WA, US

Assignee:

Wyerhaeuser NR Company - Federal Way WA

International Classification:

C04B 2/00
C04B 7/14
C04B 14/00
C04B 28/10
C04B 28/14
C04B 5/00
C04B 28/08
C04B 9/00
C04B 11/00
C04B 16/00
C04B 24/00
C04B 7/00
C04B 16/02
C04B 18/06
C04B 12/00
C04B 24/14
C04B 24/10

US Classification:

106805, 106618, 106619, 106686, 106705, 106772, 106778, 106780, 106790, 106797

Abstract:

A cement product incorporating nanocrystalline cellulose and cellulose fiber throughout the product and a method of making the product.

US Patent:

8293003, Oct 23, 2012

Filed:

Aug 9, 2012

Appl. No.:

13/571234

Inventors:

Sherry L. Thomson - Normandy Park WA, US
David J. O'Callaghan - Bonney Lake WA, US
John A. Westland - Auburn WA, US
Bing Su - Federal Way WA, US

Assignee:

Weyerhaeuser NR Company - Federal Way WA

International Classification:

C04B 2/00
C04B 7/14
C04B 14/00
C04B 28/10
C04B 28/14
C04B 5/00
C04B 28/08
C04B 9/00
C04B 11/00
C04B 16/00
C04B 24/00
C04B 7/00
C04B 16/02
C04B 18/06
C04B 12/00
C04B 24/14
C04B 24/10

US Classification:

106687, 106686, 106705, 106772, 106778, 106618, 106619, 106780, 106790, 106797

Abstract:

A cement product incorporating nanocrystalline cellulose and cellulose fiber throughout the product and a method of making the product.

US Patent:

8435345, May 7, 2013

Filed:

Sep 28, 2010

Appl. No.:

12/892239

Inventors:

John A. Westland - Auburn WA, US
David J. O'Callaghan - Bonney Lake WA, US

Assignee:

Weyerhaeuser NR Company - Federal Way WA

International Classification:

C04B 28/14
C04B 40/00
C04B 9/04
D21F 11/00
D21H 11/00
D21H 13/00
D21H 15/00
D21H 17/00
D21H 19/00
D21H 21/00
D21H 23/00
D21H 25/00
D21C 9/00

US Classification:

106805, 106780, 106820, 162 9, 1621576, 162182

Abstract:

A method of curing cementitious material comprising added a carboxylated bleached wood pulp fiber to the material during mixing. The fiber has a carboxyl content of from 10 to 70 meq/100 g cellulose fiber. The fibers are 0. 1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced.