Douglas Gattuso Maxwell

US Patent:

6514206, Feb 4, 2003

Filed:

Mar 9, 2001

Appl. No.:

09/802491

Inventors:

Douglas R. Maxwell - Woodinville WA
James R. Jago - Seattle WA

Assignee:

Koninklijke Philips Electronics, N.V. - Eindhoven

International Classification:

A61B 800

US Classification:

600443, 600447

Abstract:

An ultrasonic diagnostic imaging system and method are described for performing fundamental frequency and second harmonic frequency imaging simultaneously. Transmit bursts are employed which include a first waveform component optimized for fundamental imaging and a second waveform component optimized for harmonic imaging. The first waveform component may be centered in the transducer passband, and the second waveform component may be located on the opposite side of the center of the transducer passband from its second harmonic frequency, for instance. Echoes received from the bursts are separated into fundamental and harmonic components and used to form separate fundamental and harmonic images or blended fundamental/harmonic images.

US Patent:

6599249, Jul 29, 2003

Filed:

Feb 14, 2002

Appl. No.:

10/076766

Inventors:

Timothy Nordgren - Bothell WA
James Jago - Seattle WA
Gregory J. Friend - Seattle WA
Douglas Maxwell - Woodinville WA
Scott Easterbrook - Seattle WA
Deborah Imling - North Bend WA

Assignee:

Koninklijke Philips Electronics N.V. - Eindhoven

International Classification:

A61B 814

US Classification:

600459

Abstract:

An ultrasound probe is provided for imaging and diagnosing areas of interest that are in immediate contact with the probe. The probe provides an integrated standoff comprised of a rubber material having optimal acoustic characteristics. The lens is directly applied to the transducer and the standoff is applied to the lens such that the focal zone is placed at the area immediately below the patient contact surface of the probe. The lens material also encapsulates the transducer and provides reliable protection against electrical shock. The standoff is also separated from the surface being examined by a cap comprised of a biocompatible elastomer having high chemical and abrasive resistance that enables the probe to be easily sterilized and disinfected and provides further protection against electrical shock. The use of a standoff with optimal acoustic properties in, combination with the arrangement of the lens, standoff and cap provides a probe with a focal zone placed at the area immediately below the probe. The lens, standoff and cap are spatially arranged to minimize the volume of the distal transducer section and overall probe such that the probe is easy to manipulate.

US Patent:

20210219952, Jul 22, 2021

Filed:

May 7, 2019

Appl. No.:

17/053945

Inventors:

- EINDHOVEN, NL
Changhong Hu - Bothell WA, US
Douglas Robert Maxwell - Woodinville WA, US
David Hope Simpson - Bothell WA, US
James Robertson Jago - Seattle WA, US
Francois Guy Gerard Marie Vignon - Andover MA, US
Jun Seob Shin - Winchester MA, US
Xiaowen Hu - Bothell WA, US
Unmin Bae - Kenmore WA, US

International Classification:

A61B 8/14
A61B 8/00

Abstract:

Systems, devices, and methods for ultrasonic imaging by sparse sampling are provided. In one embodiment, an ultrasound imaging system comprises an array of ultrasound transducer elements, electronic circuitry in communication with the array of ultrasound transducer elements and configured to select a first receive aperture of the array comprising a plurality of contiguous ultrasound transducer elements and at least one non-contiguous ultrasound transducer element, and a beamformer in communication with the electronic circuitry. Each ultrasound transducer element of the first receive aperture is configured to receive reflected ultrasound echoes and generate an electrical signal representative of imaging data. The beamformer is configured to receive the electrical signals generated by the first receive aperture and apply different weight to the electrical signals generated by the contiguous ultrasound transducer elements and the electrical signal generated by the at least one non-contiguous ultrasound transducer element.

US Patent:

20180266074, Sep 20, 2018

Filed:

Aug 25, 2016

Appl. No.:

15/755400

Inventors:

- Houston TX, US
Richard Petters - Seattle WA, US
Douglas Maxwell - Arvada CO, US
Michael Rai Anderson - Houston TX, US
Laurie Meyer - Hamilton VA, US

Assignee:

Deep Reach Technology, Inc. - Houston TX

International Classification:

E02F 7/06
C22B 59/00
C22B 3/02
C22B 3/04
C22B 3/42
E02F 3/88
E02F 7/00
E02F 7/02
E21C 50/00

Abstract:

Systems and methods for recovering and concentrating rare earth elements from seabed sediment deposits using seabed excavators and shipboard processing systems.