Stephen I Shefsky

7899153, Mar 1, 2011

Apr 17, 2009

12/426022

Michael E. Dugas - Londonderry NH, US
Lee Grodzins - Lexington MA, US
Stephen I. Shefsky - Brooklyn NY, US

Thermo Niton Analyzers LLC - Billerica MA

G01N 23/223

378 45, 378 57, 209589

A method for classifying a sample based upon a complete spectral analysis. The sample is illuminated with penetrating radiation and an initial complete spectral analysis is performed based on spectral resolution of resonant fluorescence lines emitted at the surface, or within the volume, of the sample. If the initial complete spectral analysis yields the composition of the sample to within acceptable limits, analysis values are output to the user. Otherwise, further analysis, informed by the results if the initial complete spectral analysis, is performed.

8515009, Aug 20, 2013

Sep 26, 2012

13/627392

Stephen I. Shefsky - Brooklyn NY, US
Michael E. Dugas - Londonderry NH, US

Thermo Niton Analyzers LLC - Billerica MA

G01N 23/223

378 45, 378 50

Techniques disclosed herein include systems and methods for identifying counterfeit gold jewelry and other counterfeit gold items. Techniques include determining—using a non-destructive mechanism—whether an item of interest (such as an article represented as true gold) is solid gold or a gold-plated object. Techniques include using an X-ray fluorescence (XRF) analyzer to differentiate true gold from gold plating. The XRF analyzer can distinguish between gold plating and bulk gold material by comparing a ratio of L-alpha and L-beta x-ray lines of gold. The analyzer measures a ratio of intensities of characteristic L-lines of gold using X-ray fluorescence (XRF) spectroscopy. When implemented using an XRF analyzer, the system nondestructively determines whether a test object is made of solid gold/gold alloy or has gold plating only.

20080095298, Apr 24, 2008

Oct 24, 2007

11/923532

STEPHEN I. SHEFSKY - Brooklyn NY, US

G01N 23/00
G01N 23/203

378 2, 2503581

An apparatus for inspecting objects utilizes a fan beam or flood beam to illuminate the inspected region of the object. A modulator, which may take the form of a movable mask, dynamically encodes the beam so that each segment of the inspected region receives varying amounts of radiation according to a predetermined temporal sequence. The resultant signal produced by a backscatter detector or optional transmission detector receiving radiation from the object is decoded to recover spatial information so that an image of the inspected region may be constructed.

20100310041, Dec 9, 2010

Jun 3, 2010

12/793264

William L. Adams - Powell OH, US
Stephen I. Shefsky - Brooklyn NY, US

G01N 23/223

378 45

An X-ray fluorescence instrument in which x-rays are directed from a source onto a sample by a focusing element. Fluorescence from the sample is detected by an x-ray detector disposed entirely within a volume “interior” to the focusing element, as defined in the description of the invention. A second focusing element may collect emission by the sample and direct it monochromatically, over a large opening angle, onto the x-ray detector. Methods for applying the instrument, particularly for the quantification of sulfur and other contaminating elements in lubricants and fuel are also provided.

20130202083, Aug 8, 2013

Feb 3, 2012

13/365713

Stanislaw Piorek - Hillsborough NJ, US
Stephen I. Shefsky - Brooklyn NY, US
Michael E. Dugas - Londonderry NH, US

G01N 23/223

378 45

Techniques disclosed herein include systems and methods for identifying counterfeit gold jewelry and other counterfeit gold items. Techniques include determining—using a non-destructive mechanism—whether an item of interest (such as an article represented as true gold) is solid gold or a gold-plated object. Techniques include using an X-ray fluorescence (XRF) analyzer to differentiate true gold from gold plating. The XRF analyzer can distinguish between gold plating and bulk gold material by comparing a ratio of L-alpha and L-beta x-ray lines of gold. The analyzer measures a ratio of intensities of characteristic L-lines of gold using X-ray fluorescence (XRF) spectroscopy. When implemented using an XRF analyzer, the system nondestructively determines whether a test object is made of solid gold/gold alloy or has gold plating only.

20210010957, Jan 14, 2021

Jul 7, 2020

16/946801

- Carlsbad CA, US
Michael E. Dugas - Londonderry NH, US
Gregory M. Tully - Tewksbury MA, US
Stephen I. Shefsky - Brooklyn NY, US

G01N 23/223

Devices and methods are disclosed for identifying compounds using spectra generated by X-rays at two different voltage levels.

20170300864, Oct 19, 2017

Apr 19, 2017

15/491428

- New York City NY, US
Summer Crenshaw - New York City NY, US
Carisa Miklusak - New York City NY, US
Solomon Pillersdorf - New York City NY, US
Stephen Shefsky - New York City NY, US

G06Q 10/10
G06F 17/30

A method includes receiving a request associated with a first attribute, the request representative of an opportunity for employment, the attribute representative of a qualification associated with the opportunity for employment; querying a database to identify a record including a second attribute satisfying the first attribute associated with the request, the second attribute included in the record having been determined based on other information in the record; and serving, to a computing device operated by a user associated with the identified record, a network resource providing the user with access to information about the request.

20170300865, Oct 19, 2017

Apr 19, 2017

15/491475

- New York City NY, US
Summer Crenshaw - New York City NY, US
Carisa Miklusak - New York City NY, US
Solomon Pillersdorf - New York City NY, US
Stephen Shefsky - New York City NY, US

G06Q 10/10
G06F 17/30

A method includes receiving a request associated with one or more attributes, the request representative of an opportunity for employment; querying a database to identify a record including the one or more attributes associated with the request; serving, to a computing device operated by a user associated with the identified record, a network resource providing the user with access to information about the request; and responsive to user interaction with the network resource, updating the identified record to indicate a relationship between the identified record and a record associated with the received request representative of the opportunity for employment.