Arthur J Kahaian from 2027 Cortland St, Chicago, IL 60647, Phone: (773)2521992

Resumes

Staff Scientist

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Location:

Chicago, IL

Industry:

Chemicals

Work:

Nalco Company since Nov 2004
Staff Scientist
Argonne National Laboratory Apr 1996 - Aug 2004
Research Scientist
Argonne National Laboratory Aug 1994 - Apr 1996
Postdoctoral Associate
University of Minnesota Aug 1992 - Jul 1994
Postdoctoral Associate

Education:

University of Wisconsin-Madison 1987 - 1992
Doctor of Philosophy (PhD), Inorganic Chemistry Kalamazoo College 1982 - 1986
Bachelor of Arts (BA), Chemistry

Skills:

Spectroscopy
Powder X Ray Diffraction
Uv/Vis
Materials Science
Ir
Inorganic Synthesis
Organometallic Chemistry
Lithium Ion Batteries
Chromatography
Cooling Water
Air Sensitive Manipulations
Sol Gel Synthesis
Geothermal Research

Arthur Kahaian

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Us Patents

Protective Coating On Positive Lithium-Metal-Oxide Electrodes For Lithium Batteries
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US Patent:

7049031, May 23, 2006
Filed:

Jan 28, 2003
Appl. No.:

10/353385
Inventors:

Christopher S. Johnson - Naperville IL, US
Michael M. Thackeray - Naperville IL, US
Arthur J. Kahaian - Chicago IL, US
Assignee:

The University of Chicago - Chicago IL
International Classification:

H01M 4/58
US Classification:

4292311, 429224, 4292313, 429232, 4292315, 4292316, 2525181, 2525202, 25252021, 2525212, 423599, 4235931, 4235945, 423598, 42359415, 42359416, 423600
Abstract:

A positive electrode for a non-aqueous lithium cell comprising a LiMnMOspinel structure in which M is one or more metal cations with an atomic number less than 52, such that the average oxidation state of the manganese ions is equal to or greater than 3. 5, and in which 0≦x≦0. 15, having one or more lithium spine oxide LiM′Oor lithiated spinel oxide LiM′Ocompounds on the surface thereof in which M′ are cobalt cations and in which 0≦y≦1.

Layered Electrodes For Lithium Cells And Batteries
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US Patent:

7358009, Apr 15, 2008
Filed:

Feb 12, 2003
Appl. No.:

10/365286
Inventors:

Christopher S. Johnson - Naperville IL, US
Michael M. Thackeray - Naperville IL, US
John T. Vaughey - Elmhurst IL, US
Arthur J. Kahaian - Chicago IL, US
Assignee:

UChicago Argonne, LLC - Chicago IL
International Classification:

H01M 4/58
H01M 4/50
H01M 4/02
US Classification:

4292311, 429224, 42923195, 4292315, 429209
Abstract:

Lithium metal oxide compounds of nominal formula LiMO, in which M represents two or more positively charged metal ions, selected predominantly and preferably from the first row of transition metals are disclosed herein. The LiMOcompounds have a layered-type structure, which can be used as positive electrodes for lithium electrochemical cells, or as a precursor for the in-situ electrochemical fabrication of LiMOelectrodes. The LiMOcompounds of the invention may have additional functions in lithium cells, for example, as end-of-discharge indicators, or as negative electrodes for lithium cells.

Method For Chemistry Control In Cooling Systems
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US Patent:

7632412, Dec 15, 2009
Filed:

Nov 3, 2006
Appl. No.:

11/556391
Inventors:

Donald A. Johnson - Batavia IL, US
Steven R. Hatch - Naperville IL, US
Arthur J. Kahaian - Chicago IL, US
Assignee:

Nalco Company - Naperville IL
International Classification:

C02F 1/42
US Classification:

210662, 210687, 210743, 210746
Abstract:

A method for controlling a cooling water tower comprising: providing a cooling tower system, which includes a recirculated evaporative cooling water stream, a source of make-up water, an evaporative cooling unit, a heat exchanger, a bleed off line, and a bleed-off valve which is in communication with said bleed-off line; providing a plurality of conduits through which said makeup water flows into said evaporative cooling water stream, wherein there is at least a first conduit that contains a weak acid cation ion exchange column and a second conduit that does not contain a weak acid ion exchange column, and wherein each conduit has at least one conduit valve; choosing a pH and a conductivity setpoint value and a deadband value above and below said setpoint value in said cooling tower system; measuring both the pH of said evaporative cooling water stream with one or more pH meters and conductivity of said evaporative cooling water stream with one or more conductivity meters; and implementing a response to said conductivity measurements and pH measurements is disclosed.

Method For Minimizing Corrosion, Scale, And Water Consumption In Cooling Tower Systems
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US Patent:

20090277841, Nov 12, 2009
Filed:

May 7, 2008
Appl. No.:

12/116677
Inventors:

Donald A. Johnson - Batavia IL, US
Arthur J. Kahaian - Chicago IL, US
International Classification:

C02F 9/00
C02F 1/42
US Classification:

210668, 210739, 210663, 210743, 210746, 210670, 210143
Abstract:

This invention is an improved process for operation of evaporative recirculating cooling systems. In addition to reducing the scaling and corrosive tendencies of the water, the method eliminates or reduces discharge from the system without creating any localized corrosive or scaling conditions as a result of the treatment process. The described measurement and control system generally comprises an array of measurements, a means of implementing control logic, and an array of control actions including activating an ion exchange device to treat makeup water. The measurements can include of physical measurements of flow rates, chemical measurements of water composition, and performance-related metrics such as water corrosiveness or scaling tendency. Preferably, the measurements include one or more of pH, conductivity, hardness, alkalinity, corrosiveness, scaling tendency, treatment additive dosage level, and treatment additive residual of the makeup, treated makeup, and recirculating water.

Materials For Electrochemical Device Safety
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US Patent:

20110281154, Nov 17, 2011
Filed:

May 10, 2011
Appl. No.:

13/104134
Inventors:

Daniel R. Vissers - Wheaton IL, US
Khalil Amine - Oak Brook IL, US
Michael M. Thackeray - Naperville IL, US
Arthur J. Kahaian - Chicago IL, US
Christopher S. Johnson - Naperville IL, US
International Classification:

H01M 2/16
H01M 10/052
H01G 9/00
C07C 59/105
C09K 21/06
H01M 2/02
H01M 4/62
US Classification:

429163, 428402, 429122, 562587, 252606, 361502
Abstract:

An electrochemical device includes a thermally-triggered intumescent material or a gas-triggered intumescent material. Such devices prevent or minimize short circuits in a device that could lead to thermal run-away. Such devices may include batteries or supercapacitors.

Lithium-Titanium-Oxide Anodes For Lithium Batteries
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US Patent:

62215310, Apr 24, 2001
Filed:

Jul 8, 1999
Appl. No.:

9/349819
Inventors:

John T. Vaughey - Elmhurst IL
Michael M. Thackeray - Naperville IL
Arthur J. Kahaian - Chicago IL
Andrew N. Jansen - Bolingbrook IL
Chun-hua Chen - Westmont IL
Assignee:

The University of Chicago - Chicago IL
International Classification:

H01M 458
US Classification:

4292311
Abstract:

A spinel-type structure with the general formula Li[Ti. sub. 1. 67 Li. sub. 33-y M. sub. y ]O. sub. 4, for 0

Modified Lithium Vanadium Oxide Electrode Materials Products And Methods
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US Patent:

6004697, Dec 21, 1999
Filed:

Dec 5, 1997
Appl. No.:

8/985441
Inventors:

Michael M. Thackeray - Naperville IL
Arthur J. Kahaian - Chicago IL
Donald R. Visser - Naperville IL
Dennis W. Dees - Downers Grove IL
Roy Benedek - Western Springs IL
Assignee:

Minnesota Mining & Manufacturing Co. - St. Paul MN
Hydro-Quebec Corporation - Montreal
International Classification:

H01M 432
US Classification:

429223
Abstract:

A method of improving certain vanadium oxide formulations is presented. The method concerns fluorine doping formulations having a nominal formula of LiV. sub. 3 O. sub. 8. Preferred average formulations are provided wherein the average oxidation state of the vanadium is at least 4. 6. Herein preferred fluorine doped vanadium oxide materials, electrodes using such materials, and batteries including at least one electrode therein comprising such materials are provided.

Modified Lithium Vanadium Oxide Electrode Materials And Products
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US Patent:

63229285, Nov 27, 2001
Filed:

Sep 23, 1999
Appl. No.:

9/404982
Inventors:

Michael M. Thackeray - Naperville IL
Arthur J. Kahaian - Chicago IL
Keith D. Kepler - Mountain View CA
Donald R. Vissers - Naperville IL
Assignee:

3M Innovative Properties Company - St. Paul MN
International Classification:

H01M 448
C01G 3102
US Classification:

4292312
Abstract:

Improved lithium vanadium oxide formulations are presented having a nominal formula of Li. sub. x V. sub. 3-. delta. M. sub. delta. O. sub. y. Herein preferred cation doped vanadium oxide materials, electrodes using such materials, and electrochemical cells including at least one electrode therein comprising such materials are provided.