Marc F Desrosiers

US Patent:

20200003909, Jan 2, 2020

Filed:

Mar 2, 2018

Appl. No.:

16/489974

Inventors:

- Washington DC, US
Jason Ryan - Washington DC, US
Kin Cheung - Washington DC, US
Marc Desrosiers - Washington DC, US
Robert Gougelet - Washington DC, US
Pragya Shrestha - Washington DC, US

Assignee:

Global Resonance Technologies, LLC - Washington DC

International Classification:

G01T 1/02
G01N 24/10

Abstract:

A non-resonant ESR instrument/probe that can easily accept an identification card (or the like) form factor device incorporating a radiation sensitive material providing reliable and calibrated dose measurement stably and permanently stored into the device and deployed to individual, persons, animals, or objects, to act as a personal-surrogate dosimeter primarily in radiation mass events with radiation dose derived from a measure of the radiation induced changes in paramagnetic density obtained via transmission mode electron spin resonance measurements.

US Patent:

20190285714, Sep 19, 2019

Filed:

Jun 5, 2019

Appl. No.:

16/431872

Inventors:

- Chicago IL, US
Shozo Takagi - Gaithersburg MD, US
Marc Frederic Desrosiers - Waynesboro PA, US

Assignee:

ADA Foundation - Chicago IL

International Classification:

G01R 33/60
G01T 1/04
G01N 24/10
A61B 6/10

Abstract:

An electron paramagnetic resonance device includes a crystalline, emission-sensitive mass and a housing containing the device. The mass includes structurally incorporated carbonate content in a range of about 3% by weight to about 10% by weight of the mass, one or more structurally incorporated non-calcium metallic cations, and one or more structurally incorporated phosphate anions. When irradiated with a known source, the EPR device may function as a reference. When unirradiated, the EPR may function as a dosimeter. As a dosimeter, the EPR device may be used as a personal dosimeter or as a monitor for inanimate objects being subjected to radiation sources. The EPR dosimeter may be used for both gamma radiation and neutron radiation measurements.

US Patent:

20160266226, Sep 15, 2016

Filed:

Mar 14, 2016

Appl. No.:

15/068943

Inventors:

- Chicago IL, US
Shozo Takagi - Gaithersburg MD, US
Marc Frederic Desrosiers - Waynesboro PA, US

International Classification:

G01R 33/60
A61B 5/00

Abstract:

A dosimeter for EPR dosimetry systems includes a carbonated hydroxyapatite cement formed by mixing a cement powder and a cement liquid in a ratio of a range of about 0.5 to 5.0 powder-to-liquid ratio. The cement powder includes one or more calcium phosphate compounds and one or more carbonate compounds. The cement liquid includes a sodium phosphate solution. The cement, when irradiated by a radiation source, is capable of producing a measurable signal as a spectrally clean EPR spectrum. Furthermore, the measurable signal is proportional to the received radiation dose