Eric G Horn

US Patent:

7008505, Mar 7, 2006

Filed:

May 30, 2002

Appl. No.:

10/478941

Inventors:

Masood Akhtar - Madison WI, US
Eric G. Horn - Madison WI, US
Michael J. Lentz - Madison WI, US
Ross E. Swaney - Madison WI, US

Assignee:

Biopulping International, Inc. - Madison WI

International Classification:

D21B 1/16

US Classification:

162 25, 162 26, 162 9, 162 23, 162 72, 162 91, 435277, 435278

Abstract:

In a new process for preparing pulped wood chips for paper making, chips from a hardwood such as eucalyptus are inoculated with aliving culture of one or more white rot fungi. The fungi propagate throughout the body of the wood chip, selectively attacking the lignin of the wood without harming the cellulosic fibers. Subsequent mechanical pulpting results in reduced utilization of energy, improved strength, and reduced cooking time.

US Patent:

7306698, Dec 11, 2007

Filed:

Mar 18, 2002

Appl. No.:

10/100469

Inventors:

Masood Akhtar - Madison WI, US
Ross E. Swaney - Madison WI, US
Eric G. Horn - Madison WI, US
Michael J. Lentz - Madison WI, US
Gary M. Scott - Syracuse NY, US
Cory C. Black - Gurnee IL, US
Carl J Houtman - Madison WI, US
T. K. Kirk - Verona WI, US

Assignee:

Biopulping International - Madison WI
Wisconsin Alumni Research Foundation - Madison WI

International Classification:

D21C 3/04
D21C 3/12
D21C 3/20

US Classification:

162 76, 162 25, 162 68, 162 82

Abstract:

The present invention is a method for producing pulp from fibrous lignocellulose material using a treatment step which exposes the material to oxalic acid, or oxalic acid and sodium bisulfite, prior to pulping. The pulping of the resulting product requires less energy input and provides a pulp having enhanced physical properties as compared to untreated materials.

US Patent:

8092647, Jan 10, 2012

Filed:

Jul 10, 2006

Appl. No.:

11/994375

Inventors:

Masood Akhtar - Middleton WI, US
William Robert Kenealy - Madison WI, US
Eric Horn - Madison WI, US
Ross E. Swaney - Madison WI, US

Assignee:

Wisconsin Alumni Research Foundation - Madison WI
The United States of America as represented by the Secretary of Agriculture - Washington DC

International Classification:

D21C 3/20
D21C 1/00
D21B 1/04

US Classification:

162 72, 162 76, 162 77

Abstract:

The present invention is a method for producing a pulp from a fibrous lignocellulose material or source using a treatment or pretreatment step which exposes the material to oxalic acid derivatives, particularly dialkyl ester derivatives, particularly in the vapor phase. Once treated, the material may be refined using any one of the several pulping methods to produce a final pulp product and the production of the product is accompanied by strength increases in paper made from the pulp and energy savings in making the pulp, hi addition the treatment or pretreatment produces a soluble carbohydrate source and other components (e. g. acetic acid, other wood components) for further product development. In certain cases a pulp product is not produced and all of the carbohydrate present in the lignocellulose is converted into soluble sugars.

US Patent:

8123904, Feb 28, 2012

Filed:

Aug 11, 2010

Appl. No.:

12/854574

Inventors:

Masood Akhtar - Middleton WI, US
William R. Kenealy - Madison WI, US
Eric G. Horn - Madison WI, US
Ross E. Swaney - Madison WI, US
Jerrold Winandy - Mazomanie WI, US

Assignee:

Wisconsin Alumni Research Foundation - Madison WI
Biopulping International Inc. - Madison WI
The United States of America as represented by the Secretary of Agriculture - Washington DC

International Classification:

D21C 3/20
D21C 1/00
D21B 1/04
D21J 1/00

US Classification:

162 72, 162 76, 162 77, 1621641, 428 342

Abstract:

The present invention provides a method for producing an MDF board from pulp from a fibrous lignocellulose material using a treatment or pretreatment step which exposes the material to oxalic acid or oxalic acid derivatives (particularly dialkyl ester derivatives, particularly in the vapor phase). The treated wood is then subjected to a sugar extraction wash and refined using any one of the several pulping methods to produce a final pulp product. Once this is done the pulp is used to make MDF boards having improved water repellency properties.

US Patent:

20040238134, Dec 2, 2004

Filed:

May 3, 2004

Appl. No.:

10/494396

Inventors:

Masood Akhtar - Madison WI, US
Michael Lentz - Madison WI, US
Eric Horn - Madison WI, US
John Klungness - Madison WI, US
C. Scott - , US

International Classification:

D01B001/14
D21C001/00
D21C003/20

US Classification:

162/020000, 162/050000, 162/072000

Abstract:

A method of producing pulp for use in making paper products using microwave radiation to pretreat the source of pulp prior further processing. Practising the method of the invention results in substantial energy savings while decreasing environmental impact and improving paper qualities.

US Patent:

20060243403, Nov 2, 2006

Filed:

Jun 30, 2006

Appl. No.:

11/428059

Inventors:

Masood Akhtar - Madison WI, US
Michael Lentz - Madison WI, US
Eric Horn - Madison WI, US
John Klungness - Madison WI, US
C. Scott - Blanchardville WI, US

Assignee:

Biopulping International, Inc. - Madison WI
United States of America as represented by the Secretary of Agriculture - Washington DC

International Classification:

D21C 5/00

US Classification:

162050000, 162192000, 162021000

Abstract:

A method of producing pulp for use in making paper products using microwave radiation to pretreat the source of pulp prior to further processing. Practicing the method of the invention results in substantial energy savings while decreasing environmental impact and improving paper qualities.

US Patent:

20080264588, Oct 30, 2008

Filed:

Aug 31, 2007

Appl. No.:

11/849070

Inventors:

Masood Akhtar - Middleton WI, US
William R. Kenealy - Madison WI, US
Eric G. Horn - Madison WI, US
Ross E. Swaney - Madison WI, US
Jerrold Winandy - Mazomanie WI, US

International Classification:

D21C 3/04
D21H 17/33

US Classification:

162 76, 1621641

Abstract:

The present invention provides a method for producing an MDF board from pulp from a fibrous lignocellulose material using a treatment or pretreatment step which exposes the material to oxalic acid or oxalic acid derivatives (particularly dialkyl ester derivatives, particularly in the vapor phase). The treated wood is then subjected to a sugar extraction wash and refined using any one of the several pulping methods to produce a final pulp product. Once this is done the pulp is used to make MDF boards having improved water repellency properties.

US Patent:

6402887, Jun 11, 2002

Filed:

Nov 30, 1998

Appl. No.:

09/201612

Inventors:

Masood Akhtar - Madison WI
Gary M. Scott - Syracuse NY
Aziz Ahmed - Middleton WI
Michael J. Lentz - Madison WI
Eric G. Horn - Madison WI

Assignee:

Biopulping International, Inc. - Madison WI
The United States of America as represented by the Secretary of Agriculture - Washington DC

International Classification:

D21B 102

US Classification:

162 13, 162 25, 162 72, 162 73, 162 91, 162141

Abstract:

A method using biological processes in the production of pulp from industrial wood waste is described. The process makes use of various species of white-rot fungi which selectively degrade lignin. The industrial wood waste must be cleaned and hydrated prior to inoculation with the fungus. Paper produced by this process has excellent strength characteristics as compared to both non-treated industrial wood waste and pulp produced from virgin wood chips. Substantial energy savings are also realized when the biopulped industrial wood waste chips are further refined by conventional mechanical pulping procedures. Kraft pulping of wood waste resulted in strength properties comparable to those of virgin wood. Fungal pretreatment subsequently enhanced the resulting kraft pulp properties.