Pavel Stepanov Phones & Addresses
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11617 Ranch Ln, Gaithersburg, MD 20878 (301) 424-9506
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19829 Wheelwright Dr, Montgomery Village, MD 20886 (301) 977-7117
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North Potomac, MD
Specialities
Buyer's Agent • Listing Agent
Publications
Us Patents
Open-Access Emission Tomography Scanner
View pageUS Patent:
20030153830, Aug 14, 2003
Filed:
Jan 8, 2003
Appl. No.:
10/338036
Inventors:
Irving Weinberg - Bethesda MD, US
David Beylin - Derwood MD, US
Pavel Stepanov - Gaithersburg MD, US
Steve Yarnall - Poway CA, US
David Beylin - Derwood MD, US
Pavel Stepanov - Gaithersburg MD, US
Steve Yarnall - Poway CA, US
International Classification:
A61B006/00
US Classification:
600/436000
Abstract:
An apparatus and a method for implementing emission tomography of a compressed and/or immobilized body part with open access for interventions, such as biopsy, hook-wire placement, or minimally invasive therapy, are provided. The apparatus includes one or more holders that compress and/or immobilize the body part on one or more sides of the body part. One or more of the holders contains an aperture through which an intervention can be carried out. Affixed to one or more holders are mechanical stages that carry and move a gamma-ray detector or detectors across the body part, so that the gamma-ray detector(s) can at times stay on the mechanical stages in a position that does not interfere with interventions through the aperture in the body part holder(s). A safety door mechanism is affixed to the aperture in the body part holder(s) in order to prevent the gamma-ray detector(s) from coming into physical contact with one or more portions of the body part that might otherwise protrude through the aperture.
Method And Device For Image Guided Surgery
View pageUS Patent:
20100036261, Feb 11, 2010
Filed:
Aug 4, 2009
Appl. No.:
12/535236
Inventors:
Irving WEINBERG - Bethesda MD, US
Pavel Stepanov - North Potomac MD, US
Pavel Stepanov - North Potomac MD, US
Assignee:
WEINBERG MEDICAL PHYSICS LLC - Bethesda MD
International Classification:
A61B 6/00
US Classification:
600476
Abstract:
A fluorometer includes a light source to generate excitatory light toward a tissue, the tissue generating fluorescent light in response to the excitatory light. The fluorometer also includes a light sensor to receive the fluorescent light and generate a digital signal. A processor is connected to the light sensor to receive the digital signal and generate a digital image, and a display displays the digital image. The tissue generates fluorescent light as a result of excitation of at least one intrinsic tissue metabolic product. A method for distinguishing between viable and non-viable tissue using the fluorometer also is described.
Apparatus And Method For Wound Weaving And Healing
View pageUS Patent:
20100256672, Oct 7, 2010
Filed:
Mar 30, 2010
Appl. No.:
12/750034
Inventors:
Irving Weinberg - Bethesda MD, US
Mario Urdaneta - Berwyn Heights MD, US
Pavel Stepanov - North Potomac MD, US
Elisabeth Smela - Silver Spring MD, US
Mario Urdaneta - Berwyn Heights MD, US
Pavel Stepanov - North Potomac MD, US
Elisabeth Smela - Silver Spring MD, US
Assignee:
WEINBERG MEDICAL PHYSICS LLC - Bethesda MD
International Classification:
A61B 17/03
US Classification:
606214
Abstract:
A method and apparatus for closing a gap between tissues, comprising introducing a device head into the gap, applying a force to a portion of one tissue with the device head, applying a force to a portion of the other tissue with the device head, moving, via the device head, the first tissue into close proximity to the second tissue, maintaining, for a predetermined period of time via the device head, the one tissue and the other tissue in close proximity until the portion of the one tissue and the portion of the other tissue become cellularly adhered to one another, thereby forming a cellular aggregate connecting the tissues, and releasing from the device head the portion of the one tissue, the portion of the other tissue, and the cellular aggregate after a predetermined period of time of less than about one minute.
Apparatus And Method For Decreasing Bio-Effects Of Magnetic Gradient Field Gradients
View pageUS Patent:
20110089947, Apr 21, 2011
Filed:
Oct 15, 2010
Appl. No.:
12/905256
Inventors:
Irving Weinberg - Bethesda MD, US
Pavel Stepanov - North Potomac MD, US
Pavel Stepanov - North Potomac MD, US
Assignee:
WEINBERG MEDICAL PHYSICS LLC - Bethesda MD
International Classification:
G01R 33/48
G01R 33/44
G01R 33/44
US Classification:
324309, 324322
Abstract:
A magnetic field generator includes a power source and a segmented or un-segmented coil connected to the power source to generate a time-varying magnetic field. Energy is applied to the coil so that the coil generates a time-varying magnetic field gradient with a magnitude of at least 1 milliTesla per meter and a rise-time of less than 10 microseconds. The coil may be comprised of overlapping, non-overlapping or partially overlapping coil segments that may individually energized to further improve the operating characteristics of the coil to further decrease bio-effects in magnetic resonance imaging through the use of reduced pulse lengths and multi-phasic magnetic gradient pulses.
Method And Apparatus For Detecting Bone Variability With Ultraviolet Light
View pageUS Patent:
20110096966, Apr 28, 2011
Filed:
Dec 7, 2010
Appl. No.:
12/961736
Inventors:
Irving Weinberg - Bethesda MD, US
Mario Urdaneta - Berwyn Heights MD, US
Pavel Stepanov - North Potomac MD, US
Mario Urdaneta - Berwyn Heights MD, US
Pavel Stepanov - North Potomac MD, US
International Classification:
G06K 9/00
G06F 19/00
G06F 19/00
US Classification:
382128, 702 19
Abstract:
A method and apparatus for assessing the time since demise of one or more tissue components, comprising a source of radiation to generate excitatory radiation toward a tissue component, the tissue component generating responsive radiation in response to the excitatory radiation, a sensor to receive the responsive radiation from the tissue component and create a signal indicating the rate of change (over time) of the responsive radiation, a processor connected to the sensor to receive the signal from the sensor, and wherein the processor evaluates the received signal and provides information whereby a user can assess the time since demise of the tissue component based on responsive radiation generated by the tissue component as a result of excitation of at least one intrinsic tissue component metabolic product.
Method And Equipment For Producing Drift Detectors
View pageUS Patent:
20110192984, Aug 11, 2011
Filed:
Feb 7, 2011
Appl. No.:
13/022254
Inventors:
Mario Urdaneta - Berwyn Heights MD, US
Pavel Stepanov - North Potomac MD, US
Irving WEINBERG - Bethesda MD, US
Pavel Stepanov - North Potomac MD, US
Irving WEINBERG - Bethesda MD, US
Assignee:
WEINBERG MEDICAL PHYSICS LLC - Bethesda MD
International Classification:
G01T 1/24
H01L 31/18
H01L 31/18
US Classification:
25037009, 438 56, 257E31119
Abstract:
Silicon drift detectors are produced for location and energy measurement as well as spectroscopic applications by depositing a single high quality dielectric film followed by deposition of at least one low quality dielectric film.
Flexible Methods Of Fabricating Electromagnets And Resulting Electromagnet Elements
View pageUS Patent:
20120092105, Apr 19, 2012
Filed:
Sep 23, 2011
Appl. No.:
13/242386
Inventors:
Irving N. WEINBERG - Bethesda MD, US
Pavel STEPANOV - North Potomac MD, US
Mario URDANETA - Berwyn Heights MD, US
William PETER - Bethesda MD, US
Pavel STEPANOV - North Potomac MD, US
Mario URDANETA - Berwyn Heights MD, US
William PETER - Bethesda MD, US
Assignee:
WEINBERG MEDICAL PHYSICS LLC - Bethesda MD
International Classification:
H01F 5/00
H01R 43/00
B05D 3/02
B05D 5/00
B05D 3/06
H01R 43/00
B05D 3/02
B05D 5/00
B05D 3/06
US Classification:
335296, 427 58, 427559, 29825
Abstract:
An electromagnetic structure is fabricated by additive manufacturing having at least one channel traversing the structure. In one embodiment, at least one form contains apertures and/or holes forming the channel and a liquid metal traverses the structure by the channel. Electrodes are provided to apply or extract electrical voltage or power to and/or from the liquid metal as well as a mechanism for propelling a portion of the liquid metal through the form. In an alternative embodiment, both the electrically insulating and the electrically conductive materials are solid and the channel is used for conducting a coolant instead of the liquid metal.
Structures For Radiation Detection And Energy Conversion Using Quantum Dots
View pageUS Patent:
20120175584, Jul 12, 2012
Filed:
Jul 11, 2011
Appl. No.:
13/179681
Inventors:
Irving N. WEINBERG - Bethesda MD, US
Pavel STEPANOV - North Potomac MD, US
Mario G. URDANETA - Berwyn Heights MD, US
Pavel STEPANOV - North Potomac MD, US
Mario G. URDANETA - Berwyn Heights MD, US
Assignee:
WEINBERG MEDICAL PHYSICS LLC - Bethesda MD
International Classification:
H01L 31/0352
US Classification:
257 12, 257 9, 257E31039
Abstract:
Inorganic semiconducting materials such as silicon are used as a host matrix in which quantum dots reside to provide a radiation detector or energy converter. The quantum dot material may be disposed by incorporating materials sensitive to neutron detection such as boron-containing compounds, or the use of methods such as chemical vapor deposition or atomic layer deposition to insert the quantum dot material. Electrodes may be extended deep into the host matrix material to improve efficiency. Likewise, the host matrix may be machined to create pores in the matrix material. Further, amplification and signal-processing structures may be used in close proximity to the radiation-sensitive region of the device.