Thomas B Stephens

Address:

1420 Fm 2537, San Antonio, TX 78221

Phone:

2106260055

VIN:

KMHCM36C27U022813

Make:

HYUNDAI

Model:

ACCENT

Year:

2007

Address:

517 E Mandalay Dr, San Antonio, TX 78212

Phone:

2108263199

VIN:

3GNFK16387G171166

Make:

CHEVROLET

Model:

SUBURBAN

Year:

2007

US Patent:

7903978, Mar 8, 2011

Filed:

Dec 7, 2006

Appl. No.:

11/635303

Inventors:

Thomas D. Stephens - Austin TX, US
Mark A. Kelty - Catonsville MD, US
Alistair J. Price - Ellicott City MD, US

Assignee:

Broadwing, LLC - Broomfield CO

International Classification:

H04B 10/00

US Classification:

398160, 398158, 398173

Abstract:

Optical systems of the present invention generally include an optical signal controller disposed along an optical link between two optical nodes. The optical signal controller is configured to provide a monitoring signal from an optical signal passing between the nodes as a plurality of wavelength sub-bands at least one of which includes a plurality of signal channels. The controller generates a compensating channel having an optical power that is a function of the monitoring signal power in the plurality of wavelength sub-bands or total power. The compensating channel is combined with the optical signal to compensate for power variations in the optical signal passing between the nodes. In addition, the compensating channels can be used to transmit communication or system supervisory information between monitoring points and/or nodes in the system.

US Patent:

39726827, Aug 3, 1976

Filed:

Oct 6, 1975

Appl. No.:

5/619768

Inventors:

Thomas M. Stephens - Menlo Park CA
Yoshihiro Takahashi - San Francisco CA

Assignee:

Envirotech Corporation - Menlo Park CA

International Classification:

F27B 514
G01N 3112

US Classification:

23253PC

Abstract:

A furnace assembly for use in a chemical analysis system utilizing high-temperature pyrolytic techniques includes a refractory tube which defines a heated chamber wherein samples are pyrolyzed, inlet and outlet cap members mounted on opposite ends of the refractory tube, a cylindrical heating assembly which spacedly surrounds the refractory tube, and a frame which fixedly supports both the refractory tube and the heating assembly in a vertical orientation. The frame includes a stationary mounting plate and at least two rod-like members which fixedly extend in parallel downward from the stationary plate on opposite sides of the heating assembly. The heating assembly is fixed to the rods and a springy plate member is fixedly connected between the rods to provide a support upon which the outlet cap member rests and to press upwardly against the refractory tube when the same elongates during heating so that the upper and lower cap members are forceably sealed against the respective ends of the refractory tube.

US Patent:

39481042, Apr 6, 1976

Filed:

Oct 4, 1974

Appl. No.:

5/511975

Inventors:

Thomas M. Stephens - Menlo Park CA

Assignee:

Envirotech Corporation - Menlo Park CA

International Classification:

G01N 110

US Classification:

73422GC

Abstract:

A sampling valve includes upper and lower flat-faced body sections that are mounted facing one another for rotation about a generally centrally disposed shaft with a thin seal member interposed between the sections. A reciprocative device selectively rotates the upper body section relative to the lower section through a pre-selected angle about the shaft. A passage is formed from the lower body section to the upper section so that liquid continuously flows through the valve. At one portion of the valve, the passage is in communication with a bore of a sample-taking piston assembly which is arranged on the upper body section. The piston is driven upward to draw a liquid sample from the flowing liquid in the passage and then the upper body section is rotated and the sampling piston is driven downward to eject the sample into a pyrolysis furnace or the like.

US Patent:

47259639, Feb 16, 1988

Filed:

May 9, 1985

Appl. No.:

6/732301

Inventors:

Morris Taylor - Austin TX
Ira L. Morgan - Austin TX
Hunter D. Ellinger - Austin TX
Forrest F. Hopkins - Austin TX
Thomas Stephens - Leander TX

Assignee:

Scientific Measurement Systems I, Ltd. - Austin TX

International Classification:

G01N 2302
G01B 1506
G06F 1546

US Classification:

364507

Abstract:

An apparatus and method of non-contacting, non-destructive, on-line dimensional analysis and flaw detection of tubular products are disclosed. The apparatus includes penetrating radiation sources and detectors arranged about the product to be examined and a high-speed data processing system which employs novel computed tomography techniques to provide high precision dimensional estimates and flaw detection. The apparatus is capable of continuously determining the outside diameter, inside diameter, wall thickness, ovality, eccentricity, and weight-per-foot over a wide range of temperatures for essentially tubular products produced on a unit or continuous basis. The apparatus can also detect process-induced flaws in the products.

US Patent:

40912973, May 23, 1978

Filed:

Dec 8, 1975

Appl. No.:

5/638262

Inventors:

Thomas W. Stephens - Austin TX

International Classification:

G11C 2702
H03K 520

US Classification:

307353

Abstract:

A unique slope-controlled crest detector and sample-and-hold circuit for determining the peak values of a fluctuating input signal and providing a control signal indicating the time of occurrence of the peak value. This circuit successfully eliminated undesirable filtering and phase delay from the data path while incorporating adequate filtering to the slope sensing circuitry to allow good operation with poor signal-to-noise ratio on the input signal.

US Patent:

20220283594, Sep 8, 2022

Filed:

May 20, 2022

Appl. No.:

17/664399

Inventors:

- San Francisco CA, US
Jeff Ning Han - San Francisco CA, US
Thomas Scott Stephens - San Francisco CA, US
Dan Michael Babcock - San Francisco CA, US
Cody Duane Aughney - San Francisco CA, US

Assignee:

DoorDash, Inc. - San Francisco CA

International Classification:

G05D 1/02
G06Q 10/08
B60R 25/01
B60R 25/24

Abstract:

Provided are various systems and processes for improving last-mile delivery of real-time, on-demand orders for perishable goods. In one aspect, an automated vehicle (AV) comprises a body including a storage compartment for storing perishable goods. The storage compartment is accessible by a user upon authentication of the user. The AV further comprises a sensor module for receiving data for navigating the AV. The sensor module is positioned above the body on a support structure at a predetermined height above the ground, such as three to five feet. The data includes one or more of the following: audio data, video data, radio waves, and backscattered light waves. The AV further comprises an onboard computer system configured to process the data to navigate the AV along motor vehicle routes and pedestrian routes. The AV may be configured to interface with an automated locker system to retrieve or deposit the perishable goods.

US Patent:

20200404353, Dec 24, 2020

Filed:

Dec 14, 2018

Appl. No.:

16/772257

Inventors:

- Austin TX, US
Timothy Jensen - Austin TX, US
Thomas Stephens - Austin TX, US

International Classification:

H04N 21/258
H04L 29/06
G06F 16/955
H04L 29/08

Abstract:

An embodiment includes software that causes a third node to perform operations comprising: in response to receiving a first identifier for a first node that includes at least one processor, authenticate a first user of the first node via a first authentication service; in response to receiving a second identifier for a second node that includes at least one processor, authenticate a second user of the second node via a second authentication service that is unequal to the first authentication service; in response to authenticating the first user of the first node, communicate a first list of media assets to the first computing node; in response to authenticating the second user of the second node, communicate a second list of media assets to the second computing node. Other embodiments are described herein.

US Patent:

20200183414, Jun 11, 2020

Filed:

Dec 5, 2019

Appl. No.:

16/705071

Inventors:

- San Francisco CA, US
Jeff Ning Han - Palo Alto CA, US
Thomas Scott Stephens - New York NY, US
Dan Michael Babcock - Fairfield CA, US
Cody Duane Aughney - San Francisco CA, US

Assignee:

DoorDash, Inc. - San Francisco CA

International Classification:

G05D 1/02
G06Q 10/08
B60R 25/24
B60R 25/01

Abstract:

Provided are various systems and processes for improving last-mile delivery of real-time, on-demand orders for perishable goods. In one aspect, an automated vehicle (AV) comprises a body including a storage compartment for storing perishable goods. The storage compartment is accessible by a user upon authentication of the user. The AV further comprises a sensor module for receiving data for navigating the AV. The sensor module is positioned above the body on a support structure at a predetermined height above the ground, such as three to five feet. The data includes one or more of the following: audio data, video data, radio waves, and backscattered light waves. The AV further comprises an onboard computer system configured to process the data to navigate the AV along motor vehicle routes and pedestrian routes. The AV may be configured to interface with an automated locker system to retrieve or deposit the perishable goods.