Ronald L Roy

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:

53851145, Jan 31, 1995

Filed:

Dec 4, 1992

Appl. No.:

7/986848

Inventors:

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

International Classification:

H01L 2120

US Classification:

117 1

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:

56883188, Nov 18, 1997

Filed:

Jun 6, 1995

Appl. No.:

8/468971

Inventors:

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

International Classification:

C30B 3306

US Classification:

117 1

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.

US Patent:

56016611, Feb 11, 1997

Filed:

Jul 21, 1995

Appl. No.:

8/505402

Inventors:

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

International Classification:

H01L 31058

US Classification:

136253

Abstract:

The invention concerns the use of materials which exhibit photonic band gaps in the near infrared and visible regions of the optical spectrum as thermophotovoltaic emitter materials. The materials used according to the invention are particularly suitable for use in the conversion of thermal or heat energy into optical or light energy. U. S. Pat. No. 5,385,114, PHOTONIC BAND GAP MATERIALS AND METHOD OF PREPARATION THEREOF, was issued on Jan. 31, 1995 to the present inventors for a class of material which can be employed according to the present invention. According to the invention it is possible to employ these materials in the conversion of thermal energy to optical energy, in particular as a thermophotovoltaic emitter material, when the thermal energy is supplied by sources such as flames, sunlight or other broadband electromagnetic sources, or hot gases or fluids. By its nature, as disclosed in the earlier filings, the material emits optical or light energy in one or more narrow bands, which may be received by a sensor such as a photovoltaic cell that converts optical or light energy into electricity. In particular, certain significant benefits are obtained by use of the instant technology.

US Patent:

20160089109, Mar 31, 2016

Filed:

Dec 10, 2015

Appl. No.:

14/964895

Inventors:

- Summertown, GB
Miklos Gyongy - Oxford, GB
Manish Arora - Oxford, GB
Ronald Aurele Roy - Boston MA, US

International Classification:

A61B 8/08
A61N 7/00

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.