Douglas A Sexton

US Patent:

6372592, Apr 16, 2002

Filed:

Dec 18, 1996

Appl. No.:

08/768694

Inventors:

Stephen D. Russell - San Diego CA
Douglas A. Sexton - San Diego CA
Bruce W. Offord - San Diego CA
George P. Imthurn - San Diego CA

Assignee:

United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01L 21336

US Classification:

438308, 438149, 438166, 438795, 257 57, 257 66, 257347, 257352, 257410, 257411, 257412

Abstract:

A method for making a self-aligned FET with an electrically active mask comprises the steps of forming a semiconductor layer on an insulating substrate, forming an electrically nonconductive oxide layer on the semiconductor layer, forming an electrically conductive metal layer on the oxide layer, patterning the metal layer and the oxide layer to form an electrically active gate on semiconductor layer, introducing dopants into the semiconductor layer to form a source region and a drain region masked by the metal gate, and illuminating the source and the drain regions with a pulsed excimer laser having a wavelength from about 150 nm to 350 nm to anneal the source region and the drain region.

US Patent:

6582062, Jun 24, 2003

Filed:

Oct 18, 1999

Appl. No.:

09/420141

Inventors:

Winthrop D. Childers - San Diego CA
Douglas A. Sexton - San Diego CA

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B41J 205

US Classification:

347 59

Abstract:

This present invention is embodied in a large array printhead having a large array of thin-film ink drop generators formed on a single monolithic substrate. The large array printhead includes a multiplexing device to reduce parasitic resistance and the number of incoming leads. In a preferred embodiment, the substrate is initially patterned and etched and the multiplexing device is attached to the substrate at a later time. The present invention also includes methods of fabricating a plurality of large array printhead embodiments using a single monolithic substrate made of a suitable material, preferably having a low coefficient of thermal expansion.

US Patent:

6921156, Jul 26, 2005

Filed:

May 16, 2003

Appl. No.:

10/439403

Inventors:

Winthrop D. Childers - San Diego CA, US
Douglas A. Sexton - San Diego CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B41J002/05

US Classification:

347 59

Abstract:

The present invention includes as one embodiment a printhead including a flat panel substrate made of a non-crystalline material, an array of inkjet drop generators formed onto the flat panel substrate to define an inkjet printhead and thin film transistors formed on the flat panel substrate that are electrically coupled to the array of ink jet drop generators.

US Patent:

7243648, Jul 17, 2007

Filed:

Sep 17, 2004

Appl. No.:

10/943581

Inventors:

Xiaofeng Yang - Corvallis OR, US
Kenneth E. Trueba - Philomath OR, US
Rod Alley - Corvallis OR, US
Winthrop Childers - San Diego CA, US
David Tyvoll - La Jolla CA, US
Douglas A. Sexton - La Jolla CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

A61M 11/00

US Classification:

12820016, 2391022, 239690

Abstract:

A silicon die having an orifice layer with plural openings formed therein defines a drop ejection device for use in a handheld inhaler. An underlying control layer defines fluid chambers, each carrying a heat transducer. A control system energizes selected heat transducers to heat fluid in the chambers, vaporizing the fluid, which is ejected through the orifices in small droplets.

US Patent:

7338637, Mar 4, 2008

Filed:

Jan 31, 2003

Appl. No.:

10/355397

Inventors:

Grant Pease - Corvallis OR, US
Adam L Ghozeil - Corvallis OR, US
John Stephen Dunfield - Corvallis OR, US
Winthrop D. Childers - San Diego CA, US
David Tyvoll - La Jolla CA, US
Douglas A. Sexton - La Jolla CA, US
Paul Crivelli - San Diego CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B01L 3/02
B32B 5/02
B32B 27/04
B32B 27/12
G01N 15/06

US Classification:

422 681, 422 50, 422 58, 422 63, 422 81, 422 8201, 422 8202, 422100, 422101, 422102, 436 43, 436 63, 436149, 436180

Abstract:

A microfluidic device for analysis of a sample. The microfluidic device includes a substrate portion that at least partially defines a chamber for receiving the sample. The substrate portion includes a substrate having a surface. The substrate portion also includes a plurality of thin-film layers formed on the substrate adjacent the surface. The thin-film layers form a plurality of electronic devices. Each of at least two of the electronic devices is formed by a different set of the thin-film layers. The at least two electronic devices may include 1) a temperature control device for controlling the temperature of fluid in the chamber, and 2) an other electronic device configured to sense or modify a property of fluid in the chamber.

US Patent:

7380550, Jun 3, 2008

Filed:

Jan 30, 2004

Appl. No.:

10/768865

Inventors:

Douglas A. Sexton - La Jolla CA, US
Winthrop D. Childers - San Diego CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

A61M 11/00

US Classification:

12820014, 12820422

Abstract:

An inhalation system is disclosed that, in an exemplary embodiment, includes an ejector that ejects medicated droplets during an activation event, a conduit fluidically coupled to the ejector and configured to transport the droplets to a patient during an in-breath, and a particle detection system configured to determine whether the droplets have properly passed through the conduit and to the patient during an activation event. Also disclosed are methods for detecting particles in an inhaler system, with an exemplary method including generating a dose of medicament particles from an inhaler system; detecting particles emitted in the inhaler system; and determining if a desired particle flux has been achieved for inhalation by a patient.

US Patent:

7461655, Dec 9, 2008

Filed:

Aug 23, 2005

Appl. No.:

11/209576

Inventors:

Douglas A. Sexton - La Jolla CA, US
Winthrop D. Childers - San Diego CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

A61M 16/00
A61M 15/00
A62B 7/00

US Classification:

12820415, 12820417, 12820326, 12820327, 12820011, 12820312

Abstract:

An inhaler operable to control a temperature of a medicament of the inhaler includes a medicament reservoir being configured to store a medicament therein. A medicament ejector is operably coupled to the medicament reservoir and is configured to eject the medicament from the reservoir to deliver the medicament to a patient. A controllable thermal source is in thermal communication with at least an inside portion of the medicament reservoir and is operable to controllably affect a temperature of the medicament. A thermal control system is in operable communication with the controllable thermal source and is configured to control the thermal source to maintain the medicament within a predetermined temperature range.

US Patent:

7467630, Dec 23, 2008

Filed:

Feb 11, 2004

Appl. No.:

10/777449

Inventors:

Winthrop D. Childer - San Diego CA, US
David Tyvoll - La Jolla CA, US
Douglas A. Sexton - La Jolla CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

A61M 11/00
A61M 15/00
A61M 16/00
B05D 7/14
B65D 83/06

US Classification:

12820023, 12820315

Abstract:

A medicament dispenser that includes a medicament supply, an ejector, and a controller configured to actuate the ejector, where the controller is configured to use an operational parameter to produce a plurality of medicament drops having a target drop characteristic, and the operational parameter includes a correction factor that is based on a performance characteristic of the ejector.