John B Colvin

US Patent:

6620459, Sep 16, 2003

Filed:

Feb 13, 2001

Appl. No.:

09/781560

Inventors:

John Colvin - The Woodlands TX
Charles Vignal - The Woodlands TX
Philippe Edouard Tissot - Corpus Christi TX
Larry Raymond Crowe - Conroe TX

Assignee:

Houston Advanced Research Center - The Woodlands TX

International Classification:

B05D 304

US Classification:

427303, 427302, 427324, 4273855, 427396

Abstract:

The disclosed invention relates to polyisocyanate-impregnated lignocellulosic substrates having improved strength, water resistance and appearance, and also to methods and systems for producing such substrates. The polyisocyanate-impregnated lignocellulosic substrate are produced by impregnating a lignocellulosic substrate with an isocyanate resin, followed by polymerization of the isocyanate resin by applying a heated liquid to the impregnated substrate.

US Patent:

7585566, Sep 8, 2009

Filed:

Mar 30, 2005

Appl. No.:

11/095901

Inventors:

John C. Colvin - The Woodlands TX, US
Charles Vignal - The Woodlands TX, US
Philippe Edouard Tissot - Corpus Christi TX, US
Larry Raymond Crowe - Conroe TX, US

Assignee:

Houston Advanced Research Center - The Woodlands TX

International Classification:

B32B 27/00

US Classification:

4284231, 4284251, 4285371, 4285375, 428541

Abstract:

Building materials based on polyisocyanate-impregnated lignocellulosic substrates provide increased strength and water, fire, insect, and fungi resistance compared to prior art building materials. At the same time, such building materials exhibit an aesthetically pleasing surface and can, therefore, be used in consumer visible applications (such as furniture) as well as in consumer invisible (such as door frames and stiles) applications.

US Patent:

20040063891, Apr 1, 2004

Filed:

Jul 11, 2003

Appl. No.:

10/618499

Inventors:

John Colvin - The Woodlands TX, US
Charles Vignal - The Woodlands TX, US
Philippe Tissot - Corpus Christi TX, US
Larry Crowe - Conroe TX, US

International Classification:

C08H005/02
C08H005/04

US Classification:

527/100000, 527/401000, 527/301000

Abstract:

Building materials based on polyisocyanate-impregnated lignocellulosic substrates provide increased strength and water, fire, insect, and fungi resistance compared to prior art building materials. At the same time, such building materials exhibit an aesthetically pleasing surface and can, therefore, be used in consumer visible applications (such as furniture) as well as in consumer invisible (such as door frames and stiles) applications.

US Patent:

20090257796, Oct 15, 2009

Filed:

Apr 9, 2009

Appl. No.:

12/421225

Inventors:

John C. Colvin - The Woodlands TX, US
Daniel Bullock - The Woodlands TX, US
Richard C. Haut - The Woodlands TX, US

Assignee:

Houston Advanced Research Center - The Woodlands TX

International Classification:

G03G 15/20

US Classification:

399336, 977742

Abstract:

An image reproduction device (e.g., a photocopy machine) uses carbon nanotube material and a microwave generator(s) to heat internal rollers to “set” image colorant/toner. The ability to rapidly heat the nanotube material with relatively low-power microwave generators permits the development of power efficient image reproduction devices. The principle of heating carbon nanotube material embedded within a roller with microwave energy may also be used in a number of other applications such as, for example, laminating, embossing, drying, annealing, calendering, and film orientation. In these embodiments, the material being processed or heated may be paper, film, plastic, rubber, film and the like.

US Patent:

20100050619, Mar 4, 2010

Filed:

Sep 3, 2009

Appl. No.:

12/553781

Inventors:

John C. Colvin - The Woodlands TX, US
Daniel Bullock - The Woodlands TX, US
Kanti Penmetsa - The Woodlands TX, US

Assignee:

HOUSTON ADVANCED RESEARCH CENTER - The Woodlands TX

International Classification:

F01N 3/023
H05B 6/64
F24H 3/00

US Classification:

60311, 219759, 422174, 392355

Abstract:

Carbon nanotube material dispersed in a dense material such as ceramic can produce heating when exposed to microwave radiation (e.g., electromagnetic radiation in the frequency range of approximately 0.3 GHz to 300 GHz). By changing the loading of carbon nanotube material within a ceramic medium, one can affect the heating capability of the medium in dramatic and unpredicted fashion. This finding can be used to implement heating devices that heat via conduction or through radiation (e.g., infrared heating).