Yacoob Tabani

US Patent:

7367346, May 6, 2008

Filed:

Feb 7, 2005

Appl. No.:

11/052642

Inventors:

Yacoob Tabani - Basking Ridge NJ, US
Mohamed Emam Labib - Princeton NJ, US

Assignee:

Princeton Trade & Technology, Inc. - Princeton NJ

International Classification:

B08B 3/04

US Classification:

1341021, 1341022, 134166 C, 134169 C

Abstract:

Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the contaminants and allowing them to be flushed from the hollow fibers. The method is particularly useful for cleaning hemodialyzers used for dialysis and hollow fiber modules used in water treatment and separations. The two phase flow method is specifically effective in cleaning piping systems having high length to diameter (l/d) ratios.

US Patent:

7862660, Jan 4, 2011

Filed:

Jan 12, 2007

Appl. No.:

11/653072

Inventors:

Joseph J. Murawski - Plainfield NJ, US
Yacoob Tabani - Warren NJ, US
Mohamed Eman Labib - Princeton NJ, US

Assignee:

Princeton Trade & Technology, Inc. - Princeton NJ

International Classification:

B08B 9/00
B01D 61/24

US Classification:

134 8, 21032163, 21032169, 1510405, 15104096

Abstract:

A method for cleaning interior surfaces of a header region of a hemodialyzer includes steps of: introducing an insertion device having an end portion and a shaft through a hemodialyzer plug port so that the end portion of the insertion device is within the header region; rotating the shaft at a speed sufficient to generate mechanical stresses for the removal of contaminants from interior surfaces of the header region; removing the insertion device from the header region; and rinsing and flushing away the removed contaminants from the header region. An apparatus and an insertion device for cleaning a header region of a hemodialyzer are disclosed.

US Patent:

8083861, Dec 27, 2011

Filed:

Jan 16, 2009

Appl. No.:

12/321321

Inventors:

Mohamed Emam Labib - Princeton NJ, US
Yacoob Tabani - Basking Ridge NJ, US

International Classification:

B08B 9/027

US Classification:

134 221, 134 2211, 134 2212, 134 2218, 134 26, 134 34, 134 36, 134 42

Abstract:

An apparatus and method for cleaning passageways and the like with a two-phase mixture of gas under pressure and an aqueous cleaning solution. The two-phase cleaning mixture is generated in a module and is passed out of the module at a predetermined rate that determines droplet size, velocity and droplet density at the pipeline surface to be cleaned. The droplets impact the walls of the passageway to be cleaned, thereby fragmenting, eroding and removing contaminants in said passageway. These are then flushed out of the passageway by the two-phase flow. The flow of cleaning solution can be steady or pulsed. The apparatus and process include a clean-in-place system that is useful in food, beverage, pharmaceutical and similar process industries.

US Patent:

8114221, Feb 14, 2012

Filed:

Sep 30, 2008

Appl. No.:

12/286749

Inventors:

Mohamed Emam Labib - Princeton NJ, US
Stanislav S. Dukhin - Goldens Bridge NY, US
Joseph J. Murawski - Plainfield NJ, US
Yacoob Tabani - Basking Ridge NJ, US
Ching-Yue Lai - Pennington NJ, US

Assignee:

Princeton Trade & Technology, Inc. - Princeton NJ

International Classification:

B08B 9/032

US Classification:

134 2212, 134 221, 134 2211

Abstract:

The narrow diameter channel has a diameter of about 0. 02 centimeter to about 1. 6 centimeters and a length of about 0. 75 meter to about 5 meters. The internal surface of the narrow diameter channel is hydrophobic, and the surface flow entities exhibit an advancing contact angle of greater than 50 degrees and a receding contact angle of greater than zero degree. The detachment of contaminants from the internal surface of the narrow diameter channel is produced by a sweeping of the internal surface of the narrow diameter channel with the three-phase contact lines of the surface flow entities, the cleaning medium is not predispersed in the gas before entering the channel, and less that 10% of the surface of the channel is covered by a contiguous annular film.

US Patent:

8226774, Jul 24, 2012

Filed:

Sep 30, 2008

Appl. No.:

12/286747

Inventors:

Mohamed Emam Labib - Princeton NJ, US
Ching-Yue Lai - Pennington NJ, US
Yacoob Tabani - Basking Ridge NJ, US
Ziye Qian - Monroe NJ, US
Stanislav S. Dukhin - Goldens Bridge NY, US
Joseph J. Murawski - Plainfield NJ, US

Assignee:

Princeton Trade & Technology, Inc. - Princeton NJ

International Classification:

B08B 9/027
B08B 9/032
B08B 3/08
B08B 5/02

US Classification:

134 2212, 134 2211, 134 2218, 134 30, 134 34, 134 36

Abstract:

Apparatus and methods are disclosed for cleaning interiors of passageways in endoscopes or other luminal medical devices by flow of liquid and gas therethrough. The liquid flow may include rivulets, droplets or other liquid entities which move on the internal surfaces of the passageways, and may include a three-phase contact interface between liquid and dry solid and gas.

US Patent:

20020112743, Aug 22, 2002

Filed:

Mar 5, 2002

Appl. No.:

10/091201

Inventors:

Yacoob Tabani - Basking Ridge NJ, US
Mohamed Labib - Princeton NJ, US

International Classification:

B08B009/032

US Classification:

134/022120, 134/030000, 134/036000, 134/102100

Abstract:

Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the contaminants and allowing them to be flushed from the hollow fibers. The method is particularly useful for cleaning hemodialyzers used for dialysis and hollow fiber modules used in water treatment and separations. The two phase flow method is specifically effective in cleaning piping systems having high length to diameter (l/d) ratios.

US Patent:

20040007255, Jan 15, 2004

Filed:

Jun 18, 2003

Appl. No.:

10/464173

Inventors:

Mohamed Labib - Princeton NJ, US
Yacoob Tabani - Basking Ridge NJ, US

International Classification:

B08B009/00

US Classification:

134/030000, 134/022120, 134/026000, 134/094100, 134/16600C

Abstract:

An apparatus and method for cleaning passageways and the like with a two-phase mixture of gas under pressure and an aqueous cleaning solution. The two-phase cleaning mixture is generated in a module and is passed out of the module at a predetermined rate that determines droplet size, velocity and droplet density at the pipeline surface to be cleaned. The droplets impact the walls of the passageway to be cleaned, thereby fragmenting, eroding and removing contaminants in said passageway. These are then flushed out of the passageway by the two-phase flow. The flow of cleaning solution can be steady or pulsed. The apparatus and process include a clean-in-place system that is useful in food, beverage, pharmaceutical and similar process industries.

US Patent:

20080264454, Oct 30, 2008

Filed:

May 5, 2008

Appl. No.:

12/151327

Inventors:

Yacoob Tabani - Basking Ridge NJ, US
Mohamed Emam Labib - Princeton NJ, US

International Classification:

B08B 9/00
B08B 13/00

US Classification:

134 2218, 134166 C, 134115 R, 1341021

Abstract:

Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the contaminants and allowing them to be flushed from the hollow fibers. The method is particularly useful for cleaning hemodialyzers used for dialysis and hollow fiber modules used in water treatment and separations. The two phase flow method is specifically effective in cleaning piping systems having high length to diameter (l/d) ratios.