Christopher T Gregory

US Patent:

6387710, May 14, 2002

Filed:

Nov 3, 1999

Appl. No.:

09/433155

Inventors:

Zvi Gerald Loewy - Fair Lawn NJ
Christopher Carter Gregory - Newtown PA
Zygmunt Marian Andrevski - Princeton NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G01N 110

US Classification:

436180, 422 99, 422100, 422101, 422103, 436 63, 436177, 436178, 436526, 210222, 210223, 210695, 7386371, 7386372, 7386373

Abstract:

Provided is a liquid handling device comprising: a cylindrical actuator cavity in a substrate, the actuator cavity intersected by two or more actuator channels; one or more chambers with an access channel adapted to connect to a separate one of actuator channels; and a actuator comprising (a) a cylindrical body having a cylinder axis and having therein a liquid-handling compartment with, arrayed along the cylinder axis, a first end and a second end, the liquid-handling compartment being closed at the second end, (b) a dispensing channel located at the second end and traversing the cylindrical body, the dispensing channel adapted to be separately aligned with the actuator channels, wherein the actuator is adapted to receive in a seal-tight manner a plunger that operates to confine an effective chamber defined by the plunger and the second end by moving toward the second end or to expand the effective chamber by moving toward the first end. Preferably, one or more of the chambers are formed within the substrate.

US Patent:

6656158, Dec 2, 2003

Filed:

Apr 23, 2002

Appl. No.:

10/128203

Inventors:

Derek Dwayne Mahoney - Manalapan NJ
John T. Garibotto - Charlestown MA
Kerry Dennis OMara - Lambertville NJ
Christopher Carter Gregory - Newtown PA
John Michael Margicin - Langhorne PA
J. Christopher Flaherty - Topsfield MA

Assignee:

Insulet Corporation - Beverly MA

International Classification:

A61M 3700

US Classification:

604131, 604151

Abstract:

A device for delivering fluid, such as insulin for example, to a patient. The device includes an exit port assembly, a syringe-like reservoir including a side wall extending towards an outlet connected to the exit port assembly. A threaded lead screw is received in the reservoir and a plunger has an outer periphery linearly slideable along the side wall of the reservoir and an inner periphery threadedly received on the lead screw. The plunger is non-rotatable with respect to the side wall such that rotating the lead screw causes the plunger to advance within the reservoir and force fluid through the outlet. The device also includes a dispenser having a return element for causes rotation of the lead screw, and a shape memory element. A changeable length of the shape memory element decreasing from an uncharged length to a charged length resets the return element.

US Patent:

7257371, Aug 14, 2007

Filed:

Nov 26, 2003

Appl. No.:

10/721497

Inventors:

David D. Bettinger - Chantilly VA, US
Joseph J. Boone - Fairfax VA, US
Hao Cheng - Herndon VA, US
David B. S. Edsberg - Herndon VA, US
Venugopal Eyyunni - Centreville VA, US
Conor Foley - Sterling VA, US
Christopher D. Gregory - Herndon VA, US
Jason B. Maiorana - Vienna VA, US

Assignee:

Idirect Incorporated - Reston VA

International Classification:

H04B 7/19
H04J 3/06

US Classification:

455 132, 455502, 455430, 455420, 370509

Abstract:

A communication network control method for a communication network including a hub and a plurality of user nodes includes adjusting system parameters to maximize communication data rate and minimize bit error rate given current conditions of the wireless channel, current loading of the network, and user constraints. In particular, the method includes transmitting a first and second frame with first and second control information from the hub to each user node, and transmitting a first and second respective data burst from each of the user nodes to the hub according to the first and second control information. The first data burst from each user node arrives simultaneously at the hub, and the second data burst from each user node arrives simultaneously at the hub. Further, the second data burst from each user node arrives immediately following the arrival of the first data burst from each user node.

US Patent:

7394780, Jul 1, 2008

Filed:

Nov 26, 2003

Appl. No.:

10/721496

Inventors:

Christopher D. Gregory - Herndon VA, US
David D. Bettinger - Chantilly VA, US

Assignee:

Idirect Incorporated - Reston VA

International Classification:

H04B 7/185

US Classification:

370316, 370317

Abstract:

A communication network control method for a communication network including a hub and a plurality of user nodes includes adjusting system parameters to maximize communication data rate and minimize bit error rate given current conditions of the wireless channel, current loading of the network, and user constraints. In particular, the method includes transmitting a first plurality of symbols with a first modulation and first forward error correction in a frame from the hub to a first user node, and transmitting a second plurality of symbols with a second modulation and second forward error correction in the frame from the hub to the second user node.

US Patent:

7675879, Mar 9, 2010

Filed:

May 27, 2008

Appl. No.:

12/127736

Inventors:

Christopher D. Gregory - Herndon VA, US
David D. Bettinger - Chantilly VA, US

Assignee:

VT iDirect, Inc. - Herndon VA

International Classification:

H04B 7/185

US Classification:

370316, 370315, 370321

Abstract:

A communication method for a communication network includes transmitting first control information for a first frame from a hub to a plurality of user nodes, and transmitting a first data burst in the first frame from a first user node and a second data burst in the first frame from a second user node to the hub according to the first control information. A start of the first frame from the first and second user nodes occurs simultaneously at the hub. The method also includes transmitting second control information for a second frame from the hub after transmitting the first control information, transmitting a third data burst in the second frame to the hub according to the second control information, and receiving the second frame at the hub following the first frame.

US Patent:

7940714, May 10, 2011

Filed:

Jan 19, 2010

Appl. No.:

12/689888

Inventors:

David D. Bettinger - Chantilly VA, US
Joseph J. Boone - Fairfax VA, US
Hao Cheng - Hernon VA, US
David B. S. Edsberg - Eagle Mountain UT, US
Venugopal Eyyunni - Centreville VA, US
Conor Foley - Sterling VA, US
Christopher D. Gregory - Potomac Falls VA, US
Jason B. Maiorana - Vienna VA, US

Assignee:

VT iDirect, Inc. - Herndon VA

International Classification:

H04B 7/185
H04J 3/06
H04B 7/19

US Classification:

370316, 370350, 455 121, 455 131, 455 132

Abstract:

A communication method for a communication network includes transmitting first control information for a first frame from a hub to a plurality of user nodes, and receiving first data bursts in the first frame from first and second user nodes according to the first control information. A start of the first frame from the first and second user nodes occurs simultaneously at the hub. The method also includes transmitting second control information, based on demand information received from the first and second nodes, for a second frame from the hub after transmitting the first control information, receiving second data bursts in the second frame according to the second control information, and receiving the second frame at the hub following the first frame.

US Patent:

8094606, Jan 10, 2012

Filed:

Jun 15, 2007

Appl. No.:

11/764020

Inventors:

Conor Foley - Sterling VA, US
Christopher Donald Gregory - Potomac Falls VA, US
Sang Ho Go - Sterling VA, US
Venugopal Eyyunni - Centreville VA, US

Assignee:

VT Idirect, Inc. - Herndon VA

International Classification:

H04B 7/185

US Classification:

370318, 455 8, 455 9, 455 111, 455 121, 455 131, 455 10

Abstract:

A communication system includes a hub, a repeater, and a remote. The hub is configured to adjust a transmission power of the remote depending on an external condition based on (i) a measured carrier-to-noise ratio CNof data transmitted from the hub to the repeater and back to the hub using a first signal, (ii) a measured carrier-to-noise ratio CNof data transmitted from the remote to the hub via the repeater using a second signal, (iii) a predetermined carrier-to-noise ratio CNof data transmitted from the hub to the repeater and back to the hub using the first signal under a clear sky condition, and (iv) a predetermined carrier-to-noise ratio CNof data transmitted from a reference remote to the repeater and back to the hub using the second signal under a clear sky condition.

US Patent:

8323254, Dec 4, 2012

Filed:

Oct 24, 2007

Appl. No.:

11/877691

Inventors:

Mingliang Lawrence Tsai - Holmdel NJ, US
Christopher Gregory - Newtown PA, US

Assignee:

ConvaTec Technologies, Inc. - Las Vegas NV

International Classification:

A61M 1/00

US Classification:

604317, 604 9301

Abstract:

A tube assembly for carrying malodoriforous matter from the human body comprises a silicone based tube having a central bore for the malodoriforous matter, and a tubular sleeve member comprising an odor barrier material, the silicone based tube and the tubular sleeve member being arranged one within the other such that the tubular sleeve member provides an odor barrier to obstruct leakage of odors from malodoriforous matter in the bore of the silicone based tube. The tube assembly is especially suitable for use in fecal or bowel management apparatus.