Ronald A Roy

US Patent:

7445319, Nov 4, 2008

Filed:

Apr 4, 2007

Appl. No.:

11/696491

Inventors:

R. Glynn Holt - Natick MA, US
Ronald A. Roy - Mansfield MA, US

Assignee:

Synergy Innovations, Inc. - Lebanon NH

International Classification:

B41J 2/02

US Classification:

347 73

Abstract:

A device, method and system for causing a controlled collapse of cavities formed within liquid droplets wherein a pressurized jet comprising a liquid and nanoparticle material and possibly fuel produces droplets from the breakup of the jet stream. The liquid droplets are irradiated with energy to produce and expand cavities formed within the droplets by irradiation of the nanoparticles contained within the droplets. The droplets are collided with a target to collapse the cavities within the droplets. The irradiating and colliding are timed to enhance implosion energy resulting from the cavities' collapse. The implosion energy and the fuel in the cavity may be used to activate and sustain a fusion reaction.

US Patent:

7652773, Jan 26, 2010

Filed:

Jan 20, 2005

Appl. No.:

10/586713

Inventors:

Charles A. DiMarzio - Cambridge MA, US
Ronald A. Roy - Mansfield MA, US
Todd W. Murray - Medford MA, US
Florian J. Blonigen - Jamaica Plain MA, US
Luis A. Nieva - Roslindale MA, US
Lei Sui - Brighton MA, US
Gopi Maguluri - Allston MA, US

Assignee:

Northeastern University - Boston MA
Trustees of Boston University - Boston MA

International Classification:

G01B 9/02

US Classification:

356502

Abstract:

A system and method of detecting acousto-photonic emissions in optically turbid media that provide increased levels of detection sensitivity. The detection system includes an ultrasonic transducer, a laser, a photo-detector for detecting ultrasound-modulated laser light, and circuitry for processing the detected signals for subsequent analysis. The ultrasonic transducer generates an ultrasonic wave that propagates within an optically turbid medium. The laser generates a coherent light beam, which is split to form signal and reference beams. The signal beam is sent through the turbid medium, where it is phase modulated by the ultrasound. The ultrasound-modulated signal beam is provided to a photo-refractive crystal for subsequent interference with the reference beam to convert the phase modulation to intensity modulation. The DC offset of the signal beam intensity provides a measure of the magnitude of the mean phase shift induced by the ultrasound on the multiply scattered optical field within the turbid medium.

US Patent:

8025371, Sep 27, 2011

Filed:

Nov 3, 2008

Appl. No.:

12/263901

Inventors:

R. Glynn Holt - Natick MA, US
Ronald A. Roy - Mansfield MA, US

Assignee:

Synergy Innovations, Inc. - Lebanon NH

International Classification:

B41J 2/02

US Classification:

347 72

Abstract:

A device, method and system for causing a controlled collapse of cavities formed within liquid droplets wherein a pressurized jet comprising a liquid and nanoparticle material produces droplets from the breakup of the jet stream. The liquid droplets may be irradiated with energy to produce and expand cavities formed within the droplets by irradiation of the nanoparticles contained within the droplets or alternatively, a volatile fluid with or without a metal nanoparticle may form the cavity. The droplets are collided with a target to collapse the cavities within the droplets. The irradiating (if provided) and colliding are timed to enhance implosion energy resulting from the cavities' collapse. The implosion energy and the fuel in the cavity may be used to activate and sustain a fusion reaction or from any other purposes.

US Patent:

20120041309, Feb 16, 2012

Filed:

Nov 4, 2009

Appl. No.:

12/998571

Inventors:

Constantin C. Coussios - Oxford, GB
Miklos Gyongy - Oxford, GB
Manish Arora - Oxford, GB
Ronald Aurele Roy - Boston MA, US

Assignee:

ISIS INNOVATION LIMITED - Summertown, Oxford

International Classification:

A61B 8/00

US Classification:

600437

Abstract:

Apparatus for locating bubbles in a subject comprises a plurality of pressure wave detectors arranged to operate as passive detectors to generate output signals in response to the receipt of pressure waves generated at a source comprising at least one bubble, and processing means arranged to receive signals from the detectors and to determine from the signals the position of the source.

US Patent:

20120259222, Oct 11, 2012

Filed:

Sep 20, 2010

Appl. No.:

13/497470

Inventors:

Constantin Coussios - Oxford, GB
Manish Arora - Oxford, GB
Natalie Hockham - Oxford, GB
Ronald Aurele Roy - Brighton MA, US

Assignee:

ISIS INNOVATION LIMITED - Summertown, Oxford

International Classification:

A61N 7/02
A61B 8/08

US Classification:

600439

Abstract:

An ultrasound system comprises a transducer, a controller arranged to generate control signals arranged to control the transducer to generate pressure waves directed at a target volume, and sensing means arranged to sense cavitation in the target volume. The controller is arranged to receive sensing signals from the sensing means and to vary the control signals in response to the sensing signals thereby to control the cavitation.

US Patent:

20120271169, Oct 25, 2012

Filed:

Sep 22, 2010

Appl. No.:

13/497484

Inventors:

Constantin Coussios - Oxford, GB
Ronald Aurele Roy - Brighton MA, US
Manish Arora - Oxford, GB
Jamie Collin - Oxford, GB
Gail Ter Haar - Oxford, GB
Sacha D. Nandlall - Oxford, GB
Edward Jackson - Oxford, GB

Assignee:

ISIS INNOVATION LIMITED - Summertown, Oxford

International Classification:

A61B 8/00
A61B 5/01
A61N 7/02

US Classification:

600439

Abstract:

A sensing system for sensing the condition of an object comprises a transducer arranged to generate pressure waves directed at the object and detection means, such as a pressure wave detector, arranged to detect cavitation or other processes in the object. The system further comprises processing means arranged to receive detection signals from the detection means, to process the detection signals to measure a signal parameter of the detection signals that varies with a parameter of the object, and may generate a sensor output that varies in response to changes in the signal parameter.

US Patent:

56518188, Jul 29, 1997

Filed:

Jun 27, 1994

Appl. No.:

8/266146

Inventors:

Joseph B. Milstein - Brighton MA
Ronald G. Roy - Tewksbury MA

International Classification:

C30R 1700

US Classification:

117 54

Abstract:

The invention concerns materials which exhibit photonic band gaps in the near infrared and visible regions of the optical spectrum and methods of preparation of such materials. The materials manufactured according to the invention are particularly suitable for use in the optical analog to semiconductor behavior, in which a photonic band gap material, or a plurality of such materials acting in concert, can be made to interact with and control light wave propagation in a manner analogous to the way that semiconductor materials can be made to interact with and control the flow of electrically charged particles, i. e. , electricity, in both analog and digital applications. According to the invention it is possible to fabricate a photonic band gap material by impregnating the pores or voids contained within the volume of a specially prepared reticulated mesh, which may be made of a material with a high melting temperature such as a metal, with liquid material which melts at a temperature lower than the melting temperature of the reticulated mesh and which solidifies upon cooling. The reticulated mesh is then dissolved by simple chemical action in a liquid bath, leaving behind a solid reticulated structure composed of the solidified liquid material. In particular, the liquid material may be caused to solidify into an ordered solid such as a single crystal by the imposition of either or both a thermal gradient or a seed single crystal of the same or a closely related material.

US Patent:

58978518, Apr 27, 1999

Filed:

Jun 5, 1996

Appl. No.:

8/659201

Inventors:

Steven C. Quay - Edmonds WA
Dean R. Kessler - Edmonds WA
Ronald A. Roy - Kirkland WA
Dilip Worah - Bothell WA

Assignee:

Sonus Pharmaceuticals, Inc. - Bothell WA

International Classification:

A61K 4904

US Classification:

424 952

Abstract:

A method of activating an ultrasound contrast agent such that an increased number of microbubbles are produced and subsequent ultrasound images using the activated agent is enhanced. Hypobaric methods are disclosed which provide significant increases in bubble population per unit volume over unactivated solutions. The method is particularly useful for the activation of the dispersed phase in a gas or liquid in liquid emulsion.