Nikhil Gupta

US Patent:

8428400, Apr 23, 2013

Filed:

Aug 12, 2010

Appl. No.:

12/855424

Inventors:

Nikhil Gupta - Ossining NY, US
Nguyen Quang Nguyen - New York NY, US

Assignee:

Polytechnic Institute of New York University - Brooklyn NY

International Classification:

G02B 6/00

US Classification:

385 13, 385 12, 385 15, 385 31, 385 32

Abstract:

An extensometer having a loop of a single-mode optical fiber. At least two points of the loop are attached to desired locations on a specimen. Light is transmitted through the loop and the transmitted optical power is measured by a photodetector. The deformation of the specimen causes the size and shape of the loop to change, which changes the transmitted optical power. The change in optical power is related to extension or compression using calibration curves. The sensor works on the principle of transmitted power modulation through the curved section.

US Patent:

8649638, Feb 11, 2014

Filed:

Sep 12, 2012

Appl. No.:

13/611159

Inventors:

Nikhil Gupta - Ossining NY, US
Nguyen Quang Nguyen - New York NY, US

Assignee:

Polytechnic Institute of New York University - Brooklyn NY

International Classification:

G02B 6/00

US Classification:

385 13, 385 12, 385 15, 385 31, 385 32

Abstract:

A method for measuring the deformation of a specimen using an extensometer having a loop of a single-mode optical fiber. At least two points of the loop are attached to desired locations on a specimen. Light is transmitted through the loop and the transmitted optical power is measured by a photodetector. The deformation of the specimen causes the size and shape of the loop to change, which changes the transmitted optical power. The change in optical power is related to extension or compression using calibration curves. The sensor works on the principle of transmitted power modulation through the curved section.

US Patent:

20100261151, Oct 14, 2010

Filed:

Apr 9, 2010

Appl. No.:

12/757457

Inventors:

Carl Skelton - New York NY, US
Nikhil Gupta - Ossining NY, US

International Classification:

G09B 7/00

US Classification:

434350

Abstract:

An integrated system and method for the recording, collection, storage, and representation of individual and aggregate use patterns of a fully-developed matrix of interactive course materials supporting K-16 curricula in STEM (Science, Technology, Engineering, and Mathematics) subjects. Students may utilize interactive educational games to assess their performance across multiple subjects and difficulty levels of a curriculum, and obtain feedback and statistics regarding their progress in attaining educational goals.

US Patent:

20200125767, Apr 23, 2020

Filed:

Oct 18, 2019

Appl. No.:

16/657048

Inventors:

- New York NY, US
Sarvesh Sivaprakasam - Queens NY, US
Lakshmi Narasimhan Jagannathan - Queens NY, US
Nikhil Gupta - Ossining NY, US

International Classification:

G06F 21/64
G06F 17/14
G06F 16/11
G06F 16/13
G06F 16/683
G10L 19/00
G10L 25/51
H04S 1/00

Abstract:

A system for producing an audio file comprises a non-transitory computer-readable medium with instructions stored thereon, that when executed by a processor perform the steps of converting an additive manufacturing design file to a text-based file, converting the text-based file to a series of binary values, converting the series of binary values to a series of integers, calculating a normalization factor for the series of integers, dividing each of the series of integers by the normalizing factor to produce an array of floating point numbers known as the design string, multiplying the design string with the normalizing factor and comparing the resulting arrays with the original array of integers to generate the error string, converting the design string to an audio file, and converting the normalizing factor and the error string to a text file. Systems for verifying the authenticity of, identifying, and compressing AM design files are also described.

US Patent:

20190287107, Sep 19, 2019

Filed:

Mar 15, 2018

Appl. No.:

15/922639

Inventors:

- Armonk NY, US
Nikhil E. Gupta - Brooklyn NY, US

International Classification:

G06Q 20/40
G06Q 30/04
G06F 17/30

Abstract:

An example operation may include one or more of receiving, by a blockchain network, a transaction from a user device, submitting bids for validating the transaction to nodes within the blockchain network, from one or more validating nodes, calculating transaction parameters based on the submitted bids, by the one or more validating nodes, validating, by the one or more validating nodes, the transaction; executing, by a node within the blockchain network, the transaction, calculating a chargeback for the transaction, and distributing the chargeback to at least one of the one or more validating nodes.

US Patent:

20190275744, Sep 12, 2019

Filed:

Mar 7, 2019

Appl. No.:

16/295171

Inventors:

- New York NY, US
Nikhil Gupta - Ossining NY, US
Michail Maniatakos - Abu Dhabi, AE

International Classification:

B29C 64/393
B33Y 50/02
G05B 19/4099

Abstract:

A system for detecting corruption in a three-dimensional model for use in additive manufacturing comprises a non-transitory computer-readable medium with instructions stored thereon, that when executed by a processor, perform the steps of obtaining a set of tool-control language instructions that define an additive manufactured part, obtaining a first mechanical specification for the additive manufactured part, constructing a virtual three dimensional model from the set of tool-control language instructions, performing at least one analysis step on the virtual three dimensional model to determine whether the virtual three dimensional model meets the first mechanical, electrical, thermal, and/or magnetic specification, and indicating that the set of tool-control language instructions is corrupt when the virtual three dimensional model fails to meet the first mechanical, electrical, thermal, and/or magnetic specification. A method of producing an additive manufactured part is also described.

US Patent:

20180081997, Mar 22, 2018

Filed:

Sep 20, 2017

Appl. No.:

15/710723

Inventors:

- New York NY, US
Nikhil GUPTA - Ossining NY, US

International Classification:

G06F 17/50
B29C 64/386
B33Y 50/00

Abstract:

A method for securing a computer-aided design (CAD)-based shape to prevent shape counterfeiting by unauthorized three-dimensional (3D) printing includes creating and embedding a security element in the CAD-based shape itself. In some embodiments, the method includes splitting (slicing) a first solid of a three-dimensional 3D model into at least two parts, such that the 3D model comprises at least two distinct solids. The shape of the distinct solid(s) may be specified by a plurality of curved surfaces, which are defined by performing a finite element analysis on the CAD-based shape to determine an optimal shape for each curved surface. The method further includes converting the 3D model to a digital surface geometry schema according to a first resolution. The digital surface geometry schema describes the surface geometry of the at least two distinct solids. The first resolution is part of the security controls of the CAD-based shape. The first resolution may be selected based on a shape of the split of the first solid, a location of the split of the first solid, a 3D printer type, an anticipated horizontal print direction, an anticipated vertical print direction, an anticipated slicer software scheme, an anticipated slice thickness, and/or an anticipated slice location.