Barbara S Evans

US Patent:

6986963, Jan 17, 2006

Filed:

Dec 14, 2001

Appl. No.:

10/017202

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US
Valerie Malyvanh Jansen - Memphis TN, US
Jonathan Woodward - Knoxville TN, US

Assignee:

UT-Battelle LLC - Oak Ridge TN

International Classification:

H01M 4/86
H01M 8/16

US Classification:

429 42, 429 33, 429 30, 429 2

Abstract:

The employment of metallized bacterial cellulose in the construction of fuel cells and other electronic devices is disclosed. The fuel cell includes an electrolyte membrane comprising a membrane support structure comprising bacterial cellulose, an anode disposed on one side of the electrolyte membrane, and a cathode disposed on an opposite side of the electrolyte membrane. At least one of the anode and the cathode comprises an electrode support structure comprising bacterial cellulose, and a catalyst disposed in or on the electrode support structure.

US Patent:

7709133, May 4, 2010

Filed:

Jun 15, 2005

Appl. No.:

11/153146

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US
Jonathan Woodward - Surrey, GB

Assignee:

UT-Battelle, LLC - Oak Ridge TN

International Classification:

H01M 4/96
H01M 8/10
H01M 1/24
C12P 19/04

US Classification:

429 42, 429 30, 429 44, 502101, 252510, 435101

Abstract:

An electrically conductive cellulose composite includes a cellulose matrix and an electrically conductive carbonaceous material incorporated into the cellulose matrix. The electrical conductivity of the cellulose composite is at least 10 μS/cm at 25 C. The composite can be made by incorporating the electrically conductive carbonaceous material into a culture medium with a cellulose-producing organism, such as. The composites can be used to form electrodes, such as for use in membrane electrode assemblies for fuel cells.

US Patent:

7803477, Sep 28, 2010

Filed:

Aug 19, 2005

Appl. No.:

11/207431

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US
Valerie Malyvanh Jansen - Memphis TN, US
Jonathan Woodward - Knoxville TN, US

Assignee:

UT-Battelle LLC - Oak Ridge TN

International Classification:

H01M 4/90

US Classification:

429 40, 429 44, 429 42, 429 2

Abstract:

A method for the deposition of metals in bacterial cellulose and for the employment of the metallized bacterial cellulose in the construction of fuel cells and other electronic devices is disclosed. The method for impregnating bacterial cellulose with a metal comprises placing a bacterial cellulose matrix in a solution of a metal salt such that the metal salt is reduced to metallic form and the metal precipitates in or on the matrix. The method for the construction of a fuel cell comprises placing a hydrated bacterial cellulose support structure in a solution of a metal salt such that the metal precipitates in or on the support structure, inserting contact wires into two pieces of the metal impregnated support structure, placing the two pieces of metal impregnated support structure on opposite sides of a layer of hydrated bacterial cellulose, and dehydrating the three layer structure to create a fuel cell.

US Patent:

7955759, Jun 7, 2011

Filed:

Sep 23, 2010

Appl. No.:

12/889155

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US
Valerie Malyvanh Jansen - Memphis TN, US
Jonathan Woodward - Knoxville TN, US

Assignee:

UT-Battelle LLC - Oak Ridge TN

International Classification:

H01M 8/00

US Classification:

429535, 429401, 429523, 429524

Abstract:

A method for the deposition of metals in bacterial cellulose and for the employment of the metallized bacterial cellulose in the construction of fuel cells and other electronic devices is disclosed. The method for impregnating bacterial cellulose with a metal comprises placing a bacterial cellulose matrix in a solution of a metal salt such that the metal salt is reduced to metallic form and the metal precipitates in or on the matrix. The method for the construction of a fuel cell comprises placing a hydrated bacterial cellulose support structure in a solution of a metal salt such that the metal precipitates in or on the support structure, inserting contact wires into two pieces of the metal impregnated support structure, placing the two pieces of metal impregnated support structure on opposite sides of a layer of hydrated bacterial cellulose, and dehydrating the three layer structure to create a fuel cell.

US Patent:

8062868, Nov 22, 2011

Filed:

Mar 22, 2010

Appl. No.:

12/728594

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US
Jonathan Woodward - Ashtead, GB

Assignee:

UT-Battelle, LLC - Oak Ridge TN

International Classification:

C12P 19/00

US Classification:

435 72, 435170

Abstract:

An electrically conductive cellulose composite includes a cellulose matrix and an electrically conductive carbonaceous material incorporated into the cellulose matrix. The electrical conductivity of the cellulose composite is at least 10 μS/cm at 25 C. The composite can be made by incorporating the electrically conductive carbonaceous material into a culture medium with a cellulose-producing organism, such as. The composites can be used to form electrodes, such as for use in membrane electrode assemblies for fuel cells.

US Patent:

8110222, Feb 7, 2012

Filed:

Nov 15, 2002

Appl. No.:

10/295461

Inventors:

Stacy A. Hutchens - Knoxville TN, US
Jonathan Woodward - Solihull, GB
Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US

Assignee:

UT-Battelle, LLC. - Oak Ridge TN
University of Tennessee Research Foundation - Knoxville TN

International Classification:

A61K 9/14
A61F 13/00

US Classification:

424489, 424422

Abstract:

A composite biocompatible hydrogel material includes a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa. A calcium comprising salt is disposed in at least some of the pores. The porous polymer matrix can comprise cellulose, including bacterial cellulose. The composite can be used as a bone graft material. A method of tissue repair within the body of animals includes the steps of providing a composite biocompatible hydrogel material including a porous polymer matrix, the polymer matrix including a plurality of pores and providing a Young's modulus of at least 10 GPa, and inserting the hydrogel material into cartilage or bone tissue of an animal, wherein the hydrogel material supports cell colonization in vitro for autologous cell seeding.

US Patent:

8635711, Jan 21, 2014

Filed:

Sep 13, 2012

Appl. No.:

13/613627

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Ida Lee - Oak Ridge TN, US

Assignee:

UT-Battelle, LLC - Oak Ridge TN
University of Tennessee Research Foundation - Knoxville TN

International Classification:

G01Q 70/02

US Classification:

850 53, 850 1, 850 42, 850 52, 850 60, 850 61

Abstract:

A method for functionalizing cantilevers is provided that includes providing a holder having a plurality of channels each having a width for accepting a cantilever probe and a plurality of probes. A plurality of cantilever probes are fastened to the plurality of channels of the holder by the spring clips. The wells of a well plate are filled with a functionalization solution, wherein adjacent wells in the well plate are separated by a dimension that is substantially equal to a dimension separating adjacent channels of the plurality of channels. Each cantilever probe that is fastened within the plurality of channels of the holder is applied to the functionalization solution that is contained in the wells of the well plate.

US Patent:

20090074837, Mar 19, 2009

Filed:

Sep 19, 2007

Appl. No.:

11/857648

Inventors:

Barbara R. Evans - Oak Ridge TN, US
Hugh M. O'Neill - Knoxville TN, US
Stacy A. Hutchens - Knoxville TN, US
Roberto Benson - Knoxville TN, US

Assignee:

UT-BATTELLE, LLC - Oak Ridge TN

International Classification:

A61F 2/00
A61K 9/14
A61K 33/42
A61P 19/00

US Classification:

424426, 424484, 424602

Abstract:

The present invention provides a composite material comprising oxidized bacterial cellulose and calcium-deficient hydroxyapatite, and methods for preparing the composite material. The composite material is useful as a bone graft material. In another embodiment, the invention provides a method for tissue repair in a mammal. The method comprises inserting the composite material into cartilage or bone tissue.