John Van Ho

US Patent:

6915989, Jul 12, 2005

Filed:

May 1, 2002

Appl. No.:

10/136907

Inventors:

Kioumars Najmabadi - Bellevue WA, US
Chuong B. Tran - Mukilteo WA, US
John Koon-Hung Ho - Shoreline WA, US

Assignee:

The Boeing Company - Seattle WA

International Classification:

B64C013/16

US Classification:

244195, 244177, 244 75 R

Abstract:

Vibrations due to excitation of the natural modes of an aircraft's body are suppressed by an active multi-axis modal suppression system. Dedicated sensors are positioned in the aircraft at optimal locations for sensing modal induced vibrations. The sensor produced signals are processed through control logic which, in response thereto, and in response to aircraft inertial, velocity and altitude related signals produces output control signals. The control signals effect control surface deployment creating forces to suppress the natural mode induced vibrations on multiple geometric axis's. More particularly, symmetric and anti-symmetric control surface deployments are used on one or more geometric axis's to damp lateral, longitudinal, vertical and most importantly torsional vibrational modes.

US Patent:

7191985, Mar 20, 2007

Filed:

Jul 12, 2005

Appl. No.:

11/180309

Inventors:

Kioumars Najmabadi - Bellevue WA, US
Chuong B. Tran - Mukilteo WA, US
John Koon-Hung Ho - Shoreline WA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B64C 13/16

US Classification:

244195, 244177, 244 751

Abstract:

Vibrations due to excitation of the natural modes of an aircraft's body are suppressed by an active multi-axis modal suppression system. Dedicated sensors are positioned in the aircraft at optimal locations for sensing modal induced vibrations. The sensor produced signals are processed through control logic which, in response thereto, and in response to aircraft inertial, velocity and altitude related signals produces output control signals. The control signals effect control surface deployment creating forces to suppress the natural mode induced vibrations on multiple geometric axis's. More particularly, a symmetric and anti-symmetric control surface deployments are used on one or more geometric axis'to damp lateral, longitudinal, vertical and most importantly torsional vibrational modes.

US Patent:

8024079, Sep 20, 2011

Filed:

May 20, 2008

Appl. No.:

12/123942

Inventors:

Kioumars Najmabadi - Clyde Hill WA, US
William F. Shivitz - Renton WA, US
Edward Ernest Coleman - Forest Park WA, US
John Koon-hung Ho - Shoreline WA, US
Richard D. Johnson - Edmonds WA, US
William F. Carver - Shoreline WA, US
David W. Grubb - Monroe WA, US
Robert James McIntosh - Bothell WA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G01C 23/00
G06F 17/10
B64C 3/58

US Classification:

701 3, 701124, 244 49, 244213

Abstract:

A computer implemented method, apparatus, and computer usable program product for symmetric and anti-symmetric control of aircraft flight control surfaces to reduce wing-body loads. Commands are sent to symmetrically deploy outboard control surfaces to shift wing air-loads inboard based on airplane state and speed brake deployment. Surface rate retraction on a wing with peak loads is limited to reduce maximum loads due to wheel checkback accompanied by utilization of opposite wing control surfaces to retain roll characteristics. Airloads are shifted inboard on a swept wing to move the center of pressure forward, thereby reducing the tail load required to perform a positive gravity maneuver. In a negative gravity maneuver, speed brakes are retracted, thereby reducing the positive tail load and reducing the aft body design loads. High gain feedback commands are filtered from wing structural modes above one hertz by a set of linear and non-linear filters.

US Patent:

8525022, Sep 3, 2013

Filed:

Jan 9, 2009

Appl. No.:

12/735382

Inventors:

John Ho - Cambridge MA, US
Vladimir Bulovic - Lexington MA, US
Tim Osedach - Cambridge MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H01L 31/00

US Classification:

136263, 136255, 136256

Abstract:

A photovoltaic device includes a heterojunction between different semiconductor materials which are present in charge transporting layers. The device can include laterally-arranged electrodes.

US Patent:

20120115241, May 10, 2012

Filed:

Jul 21, 2010

Appl. No.:

12/840452

Inventors:

John Ho - Cambridge MA, US
Thomas Patrick Bidigare - Arlington VA, US

Assignee:

Raytheon BBN Technologies Corp. - Cambridge MA

International Classification:

G01N 21/76

US Classification:

436172, 422 681

Abstract:

Systems, devices and methods for remotely interrogating sensor electronics are described. In one embodiment, a system for detecting and localizing chemical analytes is described. This system includes a plurality of chemosensor electronic devices for detecting the presence of chemical analytes. Each of these devices includes a chemosensor for sensing chemical analytes, a transponder, and an electronic circuit for activating the transponder based on an output of the chemosensor. These devices may have a cross-section area of less than 1 square micrometer. The system also includes an interrogation device for interrogating the plurality of devices and for receiving information on the detected chemical analytes from devices with activated transponders, and a processor for determining the locations of the devices with activated transponders. These locations may be forwarded to a third party.

US Patent:

20230034379, Feb 2, 2023

Filed:

Oct 13, 2022

Appl. No.:

17/965017

Inventors:

- Billerica MA, US
David P. Marchessault - Hopkinton MA, US
Christopher R. Saulnier - Medford MA, US
John C. Ho - Sudbury MA, US
Walid A. Atia - Jamaica Plain MA, US

Assignee:

Nirrin Technologies, Inc. - Billerica MA

International Classification:

G01N 15/02
G01N 15/14
G01N 21/53

Abstract:

A device for monitoring a bioreactor is configured for in-situ analysis, e.g., by NIR, without the need for withdrawing a sample into a sample cell or into an ex-situ arrangement. The device can be inserted into a port of the bioreactor and provides a sample detection region defined by an optical element such as a lens and a photodetector. The electrical signal obtained from a photodetector that is part of the device can be directed to an analyzer via a detachable electrical connection.

US Patent:

20210283406, Sep 16, 2021

Filed:

Jan 14, 2021

Appl. No.:

17/149234

Inventors:

- Palo Alto CA, US
Alexander Jueshyan Yeh - Los Altos Hills CA, US
Yuji Tanabe - Cupertino CA, US
John Ho - Palo Alto CA, US

International Classification:

A61N 1/378
A61N 1/05
A61N 1/372
H02J 50/10
H02J 50/20
A61N 1/362
A61B 5/24
A61N 1/36
A61N 1/365
A61B 5/00
A61B 5/01
A61B 5/0215
A61B 5/026
A61B 5/145
A61H 23/00
A61M 5/142
A61N 1/375
A61M 31/00
A61N 5/06
A61N 7/00
A61H 1/00

Abstract:

Implantable devices and/or sensors can be wirelessly powered by controlling and propagating electromagnetic waves in a patient's tissue. Such implantable devices/sensors can be implanted at target locations in a patient, to stimulate areas such as the heart, brain, spinal cord, or muscle tissue, and/or to sense biological, physiological, chemical attributes of the blood, tissue, and other patient parameters. The propagating electromagnetic waves can be generated with sub-wavelength structures configured to manipulate evanescent fields outside of tissue to generate the propagating waves inside the tissue. Methods of use are also described.

US Patent:

20210088433, Mar 25, 2021

Filed:

Sep 23, 2020

Appl. No.:

17/030032

Inventors:

- Billerica MA, US
David P. Marchessault - Newton MA, US
Christopher R. Saulnier - Medford MA, US
John C. Ho - Sudbury MA, US
Walid A. Atia - Jamaica Plain MA, US

International Classification:

G01N 15/02
G01N 21/53
G01N 15/14

Abstract:

A device for monitoring a bioreactor is configured for in-situ analysis, e.g., by NIR, without the need for withdrawing a sample into a sample cell or into an ex-situ arrangement. The device can be inserted into a port of the bioreactor and provides a sample detection region defined by an optical element such as a lens and a photodetector. The electrical signal obtained from a photodetector that is part of the device can be directed to an analyzer via a detachable electrical connection.