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Arnab Sarkar

from Torrance, CA
Age ~44
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Connected to:
Abby J Sarkar, 38Abdur R Sarkar, 73Abhijeet Sarkar, 36Amalendu Sarkar, 59Anupriya Sarkar, 46Arkapravo Sarkar, 43Arnab Sarkar, 51Asim Sarkar, 75Avijit K Sarkar, 39Baisakhi Sarkar, 41

Arnab Sarkar Phones & Addresses

  • 20336 Anza Ave, Torrance, CA 90503 (424) 206-1180

Business Records

Name / Title
Company / Classification
Phones & Addresses
Arnab Sarkar
Denari Capital, LLC
Currency Trading, and Real Estate Fund,
100 W Broadway, Glendale, CA 91210
6827 Snowdon Ave, Richmond, CA 94530

Publications

Us Patents

Apparatus For Deposition By Flame Hydrolysis

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US Patent:
7383704, Jun 10, 2008
Filed:
Feb 1, 2005
Appl. No.:
11/050461
Inventors:
Arnab Sarkar - West Hills CA, US
Bedros Orchanian - North Hills CA, US
Assignee:
Nextrom Oy
International Classification:
C03B 37/018
C03B 5/237
F27B 1/26
US Classification:
65531, 65483, 65532
Abstract:
An outside chemical vapor deposition apparatus is disclosed for depositing porous glass-forming material onto a target rod to form a cylindrical body, with substantially higher efficiency than could prior apparatus. The apparatus includes two separate burner arrays, one array optimized for depositing the material during an initial stage of the process, when the cylindrical body has a relatively small diameter, and the other array optimized for depositing the material during a later stage of the process, when the cylindrical body has a relatively large diameter. In addition, each burner array can include a plurality of burners, with each burner azimuthally angled relative to the apparatus' air-flow axis, and with adjacent burners angled in opposite directions relative to that axis, to minimize the density gradient within the deposited porous material.

Preform Fabrication Process

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US Patent:
20040123630, Jul 1, 2004
Filed:
Jan 21, 2003
Appl. No.:
10/333645
Inventors:
Arnab Sarkar - West Hills CA, US
International Classification:
C03B037/018
US Classification:
065/421000
Abstract:
A process is disclosed for making a cylindrical glass preform by outside vapor deposition. Initially, a glass soot stream is directed from a deposition burner to a tapered mandrel, as the mandrel rotates about its longitudinal axis and as the burner reciprocates longitudinally along the mandrel. Mounted at opposite ends of the mandrel are a tubular glass handle and a glass tube having a closed end. After deposition has been completed, the mandrel is removed, leaving a porous glass preform with a central aperture and with the glass handle and the glass tube located at its opposite ends. The porous preform then is dehydrated and sintered into a dense glass preform, which is placed in an elongation machine that heats the end of the preform carrying the closed glass tube, while a vacuum is drawn from the central aperture via the handle. This collapses the aperture and elongates the preform into a solid glass rod.

Method And Apparatus For Sintering Porous Optical Fiber Preforms

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US Patent:
20060162390, Jul 27, 2006
Filed:
Dec 21, 2005
Appl. No.:
11/316323
Inventors:
Arnab Sarkar - West Hills CA, US
Bedros Orchanian - North Hills CA, US
International Classification:
C03B 37/10
C03B 37/012
US Classification:
065427000, 065507000
Abstract:
An improved method and apparatus is disclosed for sintering large, cylindrical, porous bodies used in the manufacture of high-quality optical fiber preforms. The apparatus has a compact, simplified structure, as compared to comparable apparatus of the prior art. The apparatus includes two separate support/slide assemblies that support the porous body throughout the sintering process. A first support/slide assembly engages a special handle for the porous body during a first stage of the process, in which the body is lowered into a furnace muffle. A second support/slide assembly then engages the porous body's handle during a second stage of the process, in which the body is controllably moved through a hot zone of the furnace, for dehydration and sintering of the body into a dense glass optical fiber preform. The body's handle is specially configured to allow both support/slide assemblies to be engaged with it simultaneously, whereby the sintering process can be carried out without the need for separate support structure during the switchover from the first support/slide assembly to the second support/slide assembly.

Edible Pet Chew

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US Patent:
20060188611, Aug 24, 2006
Filed:
Feb 18, 2005
Appl. No.:
11/060943
Inventors:
Emine Unlu - Pasadena CA, US
Oscar Ortiz - Hawthorne CA, US
Arnab Sarkar - Fountain Valley CA, US
Allan Torney - Brampton, CA
Liisa Mooney - Toronto, CA
Kasim Zubair - Brampton, CA
Dino Ruffa - Mississuga, CA
Frank Shields - La Verne CA, US
International Classification:
A23L 1/00
US Classification:
426089000
Abstract:
The present invention relates to a product and a method of making a pet chew that is edible and highly digestible. The pet chew comprises 5 to about 50% (w/w) protein, about 20 to about 80% (w/w) carbohydrate, about 5 to about 50% (w/w) humectant, and about 5 to about 30 % (w/w) water. When formed, the pet chew comprises a hardness measurement of about 5 kg to about 60 kg and an elasticity measurement of about 3 mm to about 40 mm.

Method And Apparatus For Manufacturing An Optical Fiber Core Rod

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US Patent:
20110100064, May 5, 2011
Filed:
Dec 22, 2005
Appl. No.:
11/722691
Inventors:
Arnab Sarkar - West Hills CA, US
Bedros Orchanian - North Hills CA, US
Heikki Ihalainen - Espoo, FI
International Classification:
C03B 37/012
US Classification:
65428, 65508
Abstract:
A multi-functional method and apparatus are disclosed for producing a low hydroxyl ion-containing core rod from a tube suitable for the production of low-water optical fibers. The method and apparatus combine the use of process steps of (1) hermetically sealing a tubular quartz handle of a tubular porous core preform to a tube used to feed the porous preform into a sintering furnace, (2) dehydration and sintering, and (3) elongation of the sintered preform under vacuum, all without exposing the preform's central aperture surface to ambient atmosphere.

Methods Of Making Optical Waveguides

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US Patent:
53644301, Nov 15, 1994
Filed:
Jan 8, 1993
Appl. No.:
8/002077
Inventors:
Arnab Sarkar - West Hills CA
Assignee:
Cal-Optics, Inc. - Sturbridge MA
International Classification:
C03B 37018
US Classification:
65416
Abstract:
Low attenuation, low dispersion of optical waveguides are provided by a process initiating with axial deposition of a high velocity-core soot stream impinging on a target at a high angle of incidence relative to the axis of rotation of the target. A core cylinder is built up axially by relative movement between the soot stream and target during deposition, the movement being non-constant in order to maintain a substantially constant diameter with a constant deposition rate. A cladding layer is then built up by deposition of soot radially on the core. Subsequent drying and sintering provides a vitreous preform which may be drawn directly into optical waveguides. Alternatively, the sintered product may be drawn down to smaller rods, which then are covered with further deposited soot cladding to a desired final thickness, and after further drying and sintering may be drawn to optical waveguides.

Methods Of Making Optical Waveguides

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US Patent:
55586937, Sep 24, 1996
Filed:
Oct 6, 1994
Appl. No.:
8/319394
Inventors:
Arnab Sarkar - West Hills CA
Assignee:
SpecTran Communications Fiber Technologies, Inc. - Sturbridge CT
International Classification:
C03B 3708
US Classification:
65382
Abstract:
Low attenuation, low dispersion of optical waveguides are provided by a process initiating with axial deposition of a high velocity core soot stream impinging on, a target at a high angle of incidence relative to the axis of rotation of the target. A core cylinder is built up axially by relative movement between the soot stream and target during deposition, the movement being non-constant in order to maintain a substantially constant diameter with a constant deposition rate. A cladding layer is then built up by deposition of soot radially on the core. Subsequent drying and sintering provides a vitreous preform which may be drawn directly into optical waveguides. Alternatively, the sintered product may be drawn down to smaller rods, which then are covered with further deposited soot cladding to a desired final thickness, and after further drying and sintering may be drawn to optical waveguides.

Methods Of Making Optical Waveguides

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US Patent:
50282468, Jul 2, 1991
Filed:
Feb 8, 1989
Appl. No.:
7/308986
Inventors:
Arnab Sarkar - West Hills CA
Assignee:
Ensign-Bickford Optical Technologies, Inc. - Van Nuys CA
International Classification:
C03B 3718
US Classification:
65 312
Abstract:
Low attenuation, low dispersion of optical waveguides are provided by a process initiating with axial deposition of a high velocity core soot stream impinging on a target at a high angle of incidence relative to the axis of rotation of the target. A core cylinder is built up axially by relative movement between the soot stream and target during deposition, the movement being non-constant in order to maintain a substantially constant diameter with a constant deposition rate. A cladding layer is then built up by deposition of soot radially on the core. Subsequent drying and sintering provides a vitreous preform which may be drawn directly into optical waveguides. Alternatively, the sintered product may be drawn down to smaller rods, which then are covered with further deposited soot cladding to a desired final thickness, and after further drying and sintering may be drawn to optical waveguides.
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Arnab Sarkar from Torrance, CA, age ~44 Get Report