Dick L Hilliard

US Patent:

6436345, Aug 20, 2002

Filed:

Mar 23, 2001

Appl. No.:

09/814927

Inventors:

L. Fred Roensch - Glen Allen VA
Richard H. Tribble - Richmond VA
Dick Hilliard - Glen Allen VA

Assignee:

ChemTreat, Inc. - Glen Allen VA

International Classification:

A61L 200

US Classification:

422 37, 422 28, 210754, 423477, 426335, 131300

Abstract:

The present invention provides a new method for the in situ generation of chlorine dioxide from a solution of sodium chlorite and carbon dioxide. The present invention produces effective levels of chlorine dioxide without having to resort to the use of hydrochloric acid, sulfuric acid, hydrogen peroxide, chlorine, sulfur dioxide, or methanol. By eliminating the use of toxic and/or hazardous compounds, the present invention provides a safer means for generating and using chlorine dioxide in a wider variety of applications than previously possible. For instance, the present invention can easily be adapted for the treatment of combustion exhaust gases, flue gases, cooling towers, chilled water systems, contaminated groundwater, and agricultural produce or products.

US Patent:

6564808, May 20, 2003

Filed:

Aug 11, 2000

Appl. No.:

09/635775

Inventors:

Walter P. Hempfling - Mechancisville VA
Gordon H. Bokelman - Chesterfield VA
Newton E. Kalengamaliro - Winnipeg, CA
Dick L. Hilliard - Glen Allen VA

Assignee:

Philip Morris Incorporated - New York NY

International Classification:

A24B 1524

US Classification:

131297, 131299, 131300, 131302, 131309

Abstract:

Tobacco is treated with an effective amount of one or more bactericidal gases before or during curing to reduce or eliminate bacteria, bacterial activity and/or fungal activity from tobacco leaves, and/or to reduce or eliminate the amount of tobacco-specific nitrosamine or bacterial endotoxin in cured tobacco leaves. Cured tobacco is treated with an effective amount of one or more bactericidal gases before or during storage to reduce or eliminate bacteria, bacterial activity and/or fungal activity from the cured tobacco.

US Patent:

6761872, Jul 13, 2004

Filed:

Jun 26, 2002

Appl. No.:

10/179201

Inventors:

L. Fred Roensch - Glen Allen VA
Richard H. Tribble - Richmond VA
Dick Hilliard - Glen Allen VA

Assignee:

ChemTreat, Inc. - Glen Allen VA

International Classification:

C01B 1102

US Classification:

423477, 422 28, 422 37

Abstract:

The present invention provides a new method for the in situ generation of chlorine dioxide from a solution of sodium chlorite and carbon dioxide. The present invention produces effective levels of chlorine dioxide without having to resort to the use of hydrochloric acid, sulfuric acid, hydrogen peroxide, chlorine, sulfur dioxide, or methanol. By eliminating the use of toxic and/or hazardous compounds, the present invention provides a safer means for generating and using chlorine dioxide in a wider variety of applications than previously possible. For instance, the present invention can easily be adapted for the treatment of combustion exhaust gases, flue gases, cooling towers, chilled water systems, contaminated groundwater, and agricultural produce or products.

US Patent:

7077995, Jul 18, 2006

Filed:

Jun 14, 2004

Appl. No.:

10/865957

Inventors:

L. Fred Roensch - Glen Allen VA, US
Richard H. Tribble - Richmond VA, US
Dick Hilliard - Glen Allen VA, US

Assignee:

ChemTreat, Inc., - Glen Allen VA

International Classification:

A61L 2/00

US Classification:

422 37, 422 28, 423477

Abstract:

The present invention provides a new method for the in situ generation of chlorine dioxide from a solution of sodium chlorite and carbon dioxide. The present invention produces effective levels of chlorine dioxide without having to resort to the use of hydrochloric acid, sulfuric acid, hydrogen peroxide, chlorine, sulfur dioxide, or methanol. By eliminating the use of toxic and/or hazardous compounds, the present invention provides a safer means for generating and using chlorine dioxide in a wider variety of applications than previously possible. For instance, the present invention can easily be adapted for the treatment of combustion exhaust gases, flue gases, cooling towers, chilled water systems, contaminated groundwater, and agricultural produce or products.

US Patent:

52040810, Apr 20, 1993

Filed:

May 3, 1991

Appl. No.:

7/695217

Inventors:

John Y. Mason - Plymouth CA
Edward J. Bechberger - Etobicoke, CA
Dorman N. Matchim - Citrus Heights CA
Dick L. Hilliard - Orangevale CA

Assignee:

Rio Linda Chemical Co., Ltd. - Sacramento CA

International Classification:

C01B 1102

US Classification:

423478

Abstract:

A process for the rapid generation of chlorine dioxide under reduced pressure. A reaction column having a venturi therein and a reaction chamber in fluid communication with the nozzle of the venturi is provided. An aqueous chlorate solution and a gaseous stream of acid are introduced into the reaction chamber to react and form chlorine dioxide. A driving medium is introduced into the venturi, and the chlorine dioxide from the reaction chamber is mixed with the driving medium at the outlet of the venturi. The chlorine dioxide/driving medium mixture is passed through a reaction column. In an alternate embodiment, a chlorite solution is introduced into the reaction chamber together with the chlorate solution and the gaseous stream of acid. In a further embodiment, a chlorite solution is introduced into the reaction column after mixing of the driving medium with the chlorine dioxide.