Mita C Chattoraj

6362379, Mar 26, 2002

May 1, 2001

09/846739

George G. I. Moore - Afton MN
Fred B. McCormick - Maplewood MN
Mita Chattoraj - Woodbury MN
Elisa M. Cross - Woodbury MN
Junkang Jacob Liu - Woodbury MN
Ralph R. Roberts - Cottage Grove MN
Jay F. Schulz - Eagan MN

3M Innovative Properties Company - Saint Paul MN

C07C 4120

568676, 568677, 568412, 568413, 570134, 570170

A method is provided for preparation of chlorofluoroethers ClCF CFClOR and Cl CFCFClOR by direct fluorination of Cl CHCH OR and Cl CCH OR , respectively, wherein R is a C -C alkyl-or acyl-containing group optionally up to 5 ether oxygen atoms and optionally substituted by functional groups and R , is the corresponding perfluoroalkyl or perfluoracyl-containing group.

6440689, Aug 27, 2002

Jun 28, 2001

09/894929

Rodney H. Banks - Aurora IL
Nancy L. Casselman - Aurora IL
Mita Chattoraj - Warrenville IL
Ronald V. Davis - Geneva IL
Michael J. Fehr - Geneva IL
Sasireka S. Ramesh - Aurora IL
David P. Workman - Naperville IL

Ondeo Nalco Company - Naperville IL

C12Q 102

435 29, 435968, 435 4

A method for monitoring the microbiological contamination of opaque media is described and claimed. In this method, a Fluorogenic Dye is added to an Aliquot of opaque medium. After a certain time period, a fluorometer capable of measuring fluorescent signals in an opaque medium is used to measure the fluorogenic signals of the Fluorogenic Dye and the Reacted Fluorogenic Dye. A Useful RATIO of the fluorescent signal of the Reacted Fluorogenic Dye to the fluorescent signal of the Fluorogenic Dye is calculated and the information gleaned from the RATIO is used to ascertain the state of microbiological contamination in the opaque medium.

6699684, Mar 2, 2004

Jul 23, 2002

10/201088

Bosco P. Ho - Wheaton IL
May W. Wu - Lisle IL
E. H. Kelle Zeiher - Naperville IL
Mita Chattoraj - Warrenville IL

Nalco Company - Naperville IL

A01N 100

435 29, 435 4, 435968

Methods for monitoring and/or controlling biofouling in membrane separation systems are provided. The present invention utilizes measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and/or control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.

6901945, Jun 7, 2005

Sep 30, 2003

10/674856

Robert R. Adams - Sugar Grove IL, US
Rodney H. Banks - Aurora IL, US
Mita Chattoraj - Warrenville IL, US
Joe L. Schwartz - Aurora IL, US

Nalco Company - Naperville IL

B01D011/02

137268, 422261

A system of equipment allowing addition of solid materials to a pressurized pipeline wherein said solid material is conveyed in such a way as to be readily dissolved by the liquid in said pipeline. The system includes a solid material transfer device that is used to transfer solid material to the point of intake in a pressurized pipeline, without allowing liquid from the process pipeline to access the solid material in the solid material feeder. The system of equipment has been found to be particularly useful in feeding pellets containing resazurin.

7179384, Feb 20, 2007

Apr 30, 2004

10/836760

Barbara E. Moriarty - Palatine IL, US
Narasimha M. Rao - Naperville IL, US
Kun Xiong - Naperville IL, US
Tzu-Yu Chen - Wheaton IL, US
Shunong Yang - Naperville IL, US
Mita Chattoraj - Warrenville IL, US

Nalco Company - Naperville IL

C02F 5/10

210698, 210701, 422 3, 422 15, 422 16

A method to control a cooling water system based on the rate of consumption of fluorescent polymer is described and claimed. The method includes providing a cooling water system and a water treatment product including at least one fluorescent polymer and a fluorescent tracer. Measuring the fluorescence of the fluorescent polymer and calculating its rate of consumption provides a way of determining whether to adjust one or more operating parameters in the cooling water system.

7479490, Jan 20, 2009

Feb 10, 2005

11/055206

Robert R. Adams - Sugar Grove IL, US
Rodney H. Banks - Aurora IL, US
Mita Chattoraj - Warrenville IL, US
Joe L. Schwartz - Aurora IL, US

Nalco Company - Naperville IL

A61K 9/14
A61K 31/536
A61K 47/00

5142298, 424489, 424502, 514769, 514772

A system of equipment allowing addition of solid materials to a pressurized pipeline wherein said solid material is conveyed in such a way as to be readily dissolved by the liquid in said pipeline. The system includes a solid material transfer device that is used to transfer solid material to the point of intake in a pressurized pipeline, without allowing liquid from the process pipeline to access the solid material in the solid material feeder. The system of equipment has been found to be particularly useful in feeding pellets containing resazurin.

20040115757, Jun 17, 2004

Nov 25, 2003

10/721667

Bosco Ho - Wheaton IL, US
May Wu - Lisle IL, US
E. H. Zeiher - Naperville IL, US
Mita Chattoraj - Warrenville IL, US

C12Q001/04

435/034000

Methods for monitoring and/or controlling biofouling in membrane separation systems are provided. The present invention utilizes measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and/or control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.

20040203088, Oct 14, 2004

Dec 18, 2003

10/740336

Bosco Ho - Aurora IL, US
May Wu - Lisle IL, US
Mita Chattoraj - Warrenville IL, US

C12Q001/04

435/034000

Methods for monitoring and controlling biofouling in membrane separation systems are provided. The present invention uses measurable amounts of fluorogenic agent(s) added to a feed stream to monitor and control the level of microbial growth during membrane separation and, thus, the purification of such feed stream during membrane separation.