David M Willis

US Patent:

58743154, Feb 23, 1999

Filed:

Mar 5, 1996

Appl. No.:

8/611388

Inventors:

Jeffrey A. Kraft - Cincinnati OH
Ching Sui A. Yi - Cincinnati OH
David Huntington Willis - Cincinnati OH

Assignee:

Meridian Diagnostics, Inc. - Cincinnati OH

International Classification:

G01N 130

US Classification:

436176

Abstract:

A method for staining fecal specimens to diagnose stool parasites preserved with a non-mercury fixative wherein the preserved specimen is stained with a composition of iron hematoxylin stain and trichrome stain.

US Patent:

42830621, Aug 11, 1981

Filed:

Dec 26, 1979

Appl. No.:

6/106968

Inventors:

James R. Catanzaro - Cincinnati OH
August R. Meyer - Cincinnati OH
David L. Willis - Hillsboro OH

Assignee:

Cincinnati Milacron Inc. - Cincinnati OH

International Classification:

F16J 1518

US Classification:

277 12

Abstract:

A stuffing box as applied to the sliding joint between the piston (ram) and cylinder of a hydraulic ram assembly in a hydraulic injection molding machine has a packing retainer assembly with a retainer ring with a protruding gland that extends into the stuffing box thereby to act as a pilot means to insure concentricity between the stuffing box, gland, and ram. In addition, the inside diameter of the gland has a support bushing groove in which is mounted a support bushing that has an inside diameter less than the inside diameter of the gland and which is fitted in sliding bearing relationship to the outside diameter of the ram and held there by the gland. The support bushing is preferably manufactured in two pieces from a fiber reinforced low friction resin selected from the class consisting of thermosetting resin and thermoplastic resin more preferably phenol formaldehyde and polytetrafluoroethylene.

US Patent:

20210015464, Jan 21, 2021

Filed:

Sep 25, 2020

Appl. No.:

17/033585

Inventors:

- Burnaby, CA
Trevor Stephen HANSEN - Vancouver, CA
Benjamin Eric KERBY - Richmond, CA
Kris DICKIE - Vancouver, CA
Nishant UNIYAL - Vancouver, CA
Narges AFSHAM - Coquitlam, CA
David Glenn WILLIS - Woodinville WA, US

International Classification:

A61B 8/00
A61B 8/08

Abstract:

The present embodiments relate generally to ultrasound imaging systems and methods that provide a user interface on the touchscreen display. The user interface includes an ultrasound image feed and a single control for modifying imaging depth of the ultrasound image feed. When input via the single control is received to modify the imaging depth, the system: adjusts frequency of ultrasound signals being used to acquire the ultrasound image feed; adjusts a beamformer parameter of the ultrasound signals being used to acquire the ultrasound image feed; receives first image data of the ultrasound image feed based on the adjusted frequency and the adjusted beamformer parameter; based on the first image data, adjusts Time Gain Compensation (TGC) of the ultrasound image feed; and receives second image data of the ultrasound image feed based on the adjusted frequency, beamformer parameter and TGC. Display of the second image data on the touchscreen display is then optimized without receipt of additional user input.

US Patent:

20200268344, Aug 27, 2020

Filed:

May 11, 2020

Appl. No.:

16/871048

Inventors:

- Burnaby, CA
Trevor HANSEN - Vancouver, CA
Jacob McIVOR - Vancouver, CA
Benjamin Eric KERBY - Richmond, CA
David Glenn WILLIS - Woodinville WA, US
Narges AFSHAM - Coquitlam, CA

International Classification:

A61B 8/00
G16H 30/40
G16H 80/00
G16H 50/20

Abstract:

An apparatus and method for providing remote expert feedback to an operator of an ultrasound imaging machine. The remote feedback consists of graphical icons that are dragged and dropped onto a video stream of the patient being scanned or the ultrasound image being captured and shared in real-time with the local operator to help improve their scanning technique

US Patent:

20200069283, Mar 5, 2020

Filed:

Aug 28, 2018

Appl. No.:

16/115514

Inventors:

- Burnaby, CA
David Glenn Willis - Woodinville WA, US

International Classification:

A61B 8/00
A61B 90/00
A61B 17/34
A61M 31/00

Abstract:

An apparatus for the ultrasound guided refilling of a drug delivery pump includes an ultrasound imaging transducer having a nosepiece and a support device coupled to the nosepiece of the ultrasound imaging transducer. The support device can have two support holes whose centers are positioned along a horizontal axis of the support device. A marker can be placed in each of the two support holes. The vertical axis of the ultrasound imaging transducer coincides with the vertical axis of the support device. When imaging using this apparatus and the port inlet of the pump is visualized using the ultrasound transducer, two primary marks on skin can be created by inserting a marker into the support holes. The apparatus can then be rotated around its vertical axis, and a marker again inserted into the support holes to create two secondary marks. The inlet port of the pump is then marked at the intersection of lines which connects the primary marks and respectively the secondary marks.

US Patent:

20180220995, Aug 9, 2018

Filed:

Feb 9, 2017

Appl. No.:

15/429110

Inventors:

- Burnaby, CA
Trevor Stephen HANSEN - Vancouver, CA
Benjamin Eric KERBY - Richmond, CA
Kris DICKIE - Vancouver, CA
Nishant UNIYAL - Vancouver, CA
Narges AFSHAM - Coquitlam, CA
David Glenn WILLIS - Woodinville WA, US

International Classification:

A61B 8/00
A61B 8/08

Abstract:

The present embodiments relate generally to ultrasound imaging systems and methods that provide a user interface on the touchscreen display. The user interface includes an ultrasound image feed and a single control for modifying imaging depth of the ultrasound image feed. When input via the single control is received to modify the imaging depth, the system: adjusts frequency of ultrasound signals being used to acquire the ultrasound image feed; adjusts a beamformer parameter of the ultrasound signals being used to acquire the ultrasound image feed; receives first image data of the ultrasound image feed based on the adjusted frequency and the adjusted beamformer parameter; based on the first image data, adjusts Time Gain Compensation (TGC) of the ultrasound image feed; and receives second image data of the ultrasound image feed based on the adjusted frequency, beamformer parameter and TGC. Display of the second image data on the touchscreen display is then optimized without receipt of additional user input.

US Patent:

20170105701, Apr 20, 2017

Filed:

Oct 19, 2015

Appl. No.:

14/887157

Inventors:

- Burnaby, CA
Trevor HANSEN - Vancouver, CA
Jacob McIVOR - Vancouver, CA
Benjamin Eric KERBY - Richmond, CA
David Glenn WILLIS - Woodinville WA, US
Narges AFSHAM - Coquitlam, CA

International Classification:

A61B 8/00
A61B 8/08

Abstract:

An apparatus and method for providing remote expert feedback to an operator of an ultrasound imaging machine. The remote feedback consists of graphical icons that are dragged and dropped onto a video stream of the patient being scanned or the ultrasound image being captured and shared in real-time with the local operator to help improve their scanning technique