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Alexander S Tarassov

from Seven Fields, PA
Age ~62
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Also known as:
Alexandre S Tarassov, Alex S Tarassov
Phone and address:
221 Hillvue Dr, Seven Fields, PA 16046
(724) 687-9108
Related to:
Svetlana A Tarassov, 37Pavel A Tarassov, 35
Connected to:
Andrei V Tarassov, 48Louiza Y Tarassova, 37Peter G Tarassoff, 77Vadim Tarassov, 57Marion D Tarasuk, 78Matthew T Tarasuk, 68Vasily Tarasyuk, 69Cheryle A Taraszewski, 78Daniel A Taraszewski, 49Monika Z Taraszka, 44

Alexander Tarassov Phones & Addresses

  • 221 Hillvue Dr, Mars, PA 16046 (724) 687-9108
  • 110 Woodhaven Dr, Mars, PA 16046 (724) 772-3267
  • 116 Woodhaven Dr, Mars, PA 16046 (724) 772-3267
  • Seven Fields, PA
  • Roanoke, TX
  • Exton, PA
  • Glen Allen, VA
  • Butler, PA
  • Evans City, PA
  • Cranberry Twp, PA
  • 221 Hillvue Dr, Seven Fields, PA 16046 (724) 875-0358

Work

Position: None

Education

Degree: High school graduate or higher

Industries

Research

Resumes

Resumes

Alexander Tarassov Photo 1

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Location:
Mars, PA
Industry:
Research
Work:

None

Publications

Us Patents

Curtain Gas Filter For Mass- And Mobility-Analyzers That Excludes Ion-Source Gases And Ions Of High Mobility

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US Patent:
20110174966, Jul 21, 2011
Filed:
Sep 17, 2009
Appl. No.:
13/121065
Inventors:
Hermann Wollnik - Santa Fe NM, US
Alexander Tarassov - Mars PA, US
Gary A. Eiceman - Las Cruces NM, US
Assignee:
SHIMADZU CORPORATION - Kyoto-shi, Kyoto-fu
International Classification:
H01J 49/40
H01J 49/26
US Classification:
250286, 250288
Abstract:
A filter for a mass- or mobility-spectrometer that bars gases or vapors of a high-pressure ion source, as well as ions of high mobility and charged droplets, from entering an evacuated mass spectrometer or a mobility spectrometer at a lower pressure than the filter. The buffer gas of the high pressure ion source is blown into the volume of this filter directly or through tubes from where buffer gas and embedded ions are sucked through the aperture of a diaphragm or through an aperture of a capillary mainly from an “extraction volume” filled with a separately supplied clean gas, into which ions of interest are pushed by electric fields formed by electrodes that are substantially rotational symmetric around the “extraction volume” and a substantially flat electrode with respect to an axis of ion extraction and the end of the capillary and the end of a coaxial tube surrounding the capillary.

Recirculating Filtration System For Use With A Transportable Ion Mobility Spectrometer In Gas Chromatography Applications

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US Patent:
57367396, Apr 7, 1998
Filed:
Oct 8, 1996
Appl. No.:
8/726843
Inventors:
Robert E. Uber - Allison Park PA
Viktor Kouznetsov - Mars PA
Alexander Tarassov - Mars PA
Byron L. Carnahan - Pittsburgh PA
Charles W. Pipich - Monroeville PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
H01J 4940
H01J 4904
US Classification:
250287
Abstract:
Generally, the present invention provides a recirculating filtration system for use with a transportable ion mobility spectrometer in gas chromatography applications. The transportable recirculating filtration system comprises a pump and a set of filters and flow sensors connected to an ion mobility spectrometry sensor having a gas chromatograph column at its inlet. The IMS sensor's outlet flow is cleaned by the filters and recirculated by the pump back into the IMS sensor as the carrier fluid stream flow. A portion of the IMS sensor's outlet flow equal to the amount of flow introduced into the sensor as the sample is exhausted from the filtration system to maintain a constant total flow volume through the system as the sample is being analyzed. Preferably, the multicapillary column is sealed to a heated transfer line leading to the sample stream inlet of the IMS sensor. The transfer line is preferably maintained at a temperature 10. degree. C. -40. degree. C.

Ion Mobility Spectrometer

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US Patent:
54204240, May 30, 1995
Filed:
Apr 29, 1994
Appl. No.:
8/235484
Inventors:
Byron L. Carnahan - Pittsburgh PA
Alexander S. Tarassov - Mars PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
H01J 4940
H01J 4942
US Classification:
250287
Abstract:
An ion mobility spectrometer having a housing with an analyzer positioned therein. The analyzer includes first and second longitudinally spaced apart electrodes which are preferably cylindrical in configuration. The space between the electrodes defines an analytical gap which is in communication with a source of carrier gas. An ionization source such as a. beta. -emitter or corona discharge is juxtaposed with the analytical gap and source of sample media and includes an ion aperture for ions to enter said gap. The spectrometer includes an ion detector for measuring ions. An electrical controller connected to the first and second electrodes for impressing a first direct potential and second periodic asymmetrical potential capable of creating a transverse electrical field therebetween during the flow of carrier gas in the analytical gap. Preferably, a third low voltage ripple potential is impressed in series with the first two potentials. A third electrode, normally the ionization source, for electrically migrating the ions formed by the source into the analytical gap is positioned proximate to the ion aperture.

Recirculating Filtration System For Use With A Transportable Ion Mobility Spectrometer

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US Patent:
57238618, Mar 3, 1998
Filed:
Apr 4, 1996
Appl. No.:
8/628147
Inventors:
Byron Lee Carnahan - Pittsburgh PA
Alexander Semenovich Tarassov - Mars PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
H01J 4940
H01J 4904
US Classification:
250287
Abstract:
Generally, the present invention provides a recirculating filtration system for use with a transportable ion mobility spectrometer. One preferred embodiment of the transportable recirculating filtration system comprises a pump connected with a set of filters and flow sensors to an ion mobility spectrometry (IMS) sensor. The IMS sensor's outlet flow is cleaned by the filters and recirculated by the pump back into the IMS sensor as the carrier fluid stream flow. A portion of the IMS sensor's outlet flow equal to the amount of flow introduced into the sensor is exhausted from the filtration system to maintain a constant total flow volume through the system as the sample is being taken. An alternate preferred embodiment of the present invention provides a transportable recirculating filtration system for measuring an unknown concentration of a selected ionizable contaminant substance such as benzene present in a sample fluid stream in which other substances may coexist. The filtration system of the alternate preferred embodiment comprises a pump connected with a set of filters, flow sensors, and a plurality of valves to a device for introducing a controlled concentration of the selected ionizable contaminant into an ion mobility spectrometry (IMS) sensor.

Inlet Heating Device For Ion Mobility Spectrometer

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US Patent:
57638764, Jun 9, 1998
Filed:
Apr 4, 1996
Appl. No.:
8/627584
Inventors:
John Michael Alfred Pertinarides - Orlando FL
Alexander Semenovich Tarassov - Mars PA
Byron Lee Carnahan - Pittsburgh PA
Charles W. Pipich - Monroeville PA
Viktor Kouznetsov - Mars PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
B01D 5944
H01J 4900
US Classification:
250288
Abstract:
Generally, the present invention provides a device for heating the sample stream inlet of an ion mobility spectrometry (IMS) sensor. The heating device increases the temperature of the sample stream inlet surface to reduce the amount of time between adsorption and desorption taking place on the surface. This greatly improves the ability of the IMS sensor to follow rapidly changing analyte concentration levels. An alternate preferred embodiment of the present invention provides a flow smoothing device for decreasing the turbulence present in the fluid flow entering the IMS sensor's carrier stream inlet. This flow smoothing insert permits increasing the fluid flow rate entering the IMS sensor's carrier stream inlet to levels which maximize the IMS sensor's measurement sensitivity without causing mixing of the sample and carrier fluid stream flows.
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Alexander S Tarassov from Seven Fields, PA, age ~62 Get Report