David A Snyder

US Patent:

6509697, Jan 21, 2003

Filed:

Jan 30, 2001

Appl. No.:

09/771671

Inventors:

Robert Ervin - Gaithersburg MD
Gregory Walter - Frederick MD
David Snyder - Frederick MD

Assignee:

Fusion UV Systems, Inc. - Gaithersburg MD

International Classification:

H05B 4124

US Classification:

315248, 315 3951, 315112, 315344, 347100, 313 35

Abstract:

A compact, electrodeless, microwave-powered lamp (e. g. , ultraviolet light emitting lamp) is provided, as well as methods of using this lamp. The lamp includes a microwave generator, waveguide and RF cavity. The RF slot between the waveguide and RF cavity, for introducing microwaves from the waveguide into the RF cavity, extends through an end member forming the RF cavity rather than through the elliptical-shaped reflector; and the RF slot is aligned with the bulb. Cooling air for cooling the bulb passes through the RF slot, and preferably this cooling air passes by both the bulb and microwave generator for cooling both. The bulb is rotated during use. The compact size of the lamp facilitates its use in small devices, such as inkjet printers for office use to cure ultraviolet light curable inkjet inks, among other uses.

US Patent:

7057183, Jun 6, 2006

Filed:

Apr 30, 2004

Appl. No.:

10/834877

Inventors:

Joe T. May - Leesburg VA, US
David C. Snyder - Frederick MD, US
James M. Raymont - Sterling VA, US
Matthew J. McConnell - Ashburn VA, US
Edward A. Casacia - Sterling VA, US
Kyle L. Bostian - Frederick MD, US

Assignee:

Electronic Instrumentation and Technology, Inc. - Sterling VA

International Classification:

G01J 1/42

US Classification:

250372

Abstract:

A radiometer that incorporates multiple UV bandwidth sensors, defined in nanometers, and includes connectors for inserting a cable that is used to connect to another sensor, or to a data collection module (DCM) in a multidrop, or daisy-chain arrangement. Each sensor can be positioned at any point on a three-dimensional work piece, and will receive UV energy at the aperture having an optical component. The collected energy is directed to a detector in the sensor. A processor in the body of the sensor then computes the amount of UV radiation based on signals from the detector. This information is transferred to and stored in a data collection module to which the sensor string is connected. Data stored in the DCM can then be transferred to a computer for display purposes. The sensors and DCM can be tethered to the computer for real-time measurement readings when adjusting the UV lamps.

US Patent:

7183558, Feb 27, 2007

Filed:

Feb 16, 2006

Appl. No.:

11/354973

Inventors:

Joe T. May - Leesburg VA, US
David C. Snyder - Frederick MD, US
James M. Raymont - Sterling VA, US
Matthew J. McConnell - Ashburn VA, US
Edward A. Casacia - Sterling VA, US
Kyle L. Bostian - Frederick MD, US

Assignee:

Electronic Instrumentation and Technology, Inc. - Sterling VA

International Classification:

G01J 1/42

US Classification:

250372

Abstract:

A radiometer that incorporates multiple UV bandwidth sensors, defined in nanometers, and includes connectors for inserting a cable that is used to connect to another sensor, or to a data collection module (DCM) in a multidrop, or daisy-chain arrangement. Each sensor can be positioned at any point on a three-dimensional work piece, and will receive UV energy at the aperture having an optical component. The collected energy is directed to a detector in the sensor. A processor in the body of the sensor then computes the amount of UV radiation based on signals from the detector. This information is transferred to and stored in a data collection module to which the sensor string is connected. Data stored in the DCM can then be transferred to a computer for display purposes. The sensors and DCM can be tethered to the computer for real-time measurement readings when adjusting the UV lamps.

US Patent:

7601964, Oct 13, 2009

Filed:

Apr 10, 2007

Appl. No.:

11/733516

Inventors:

Joe T. May - Leesburg VA, US
Matthew J. McConnell - Ashburn VA, US
David C. Snyder - Frederick MD, US

Assignee:

Electronic Instrumentation & Technology, Inc. - Sterling VA

International Classification:

G01J 1/42

US Classification:

250372, 250365, 25037001

Abstract:

A detector receives energy pulses and a lossy integration circuit generates a lossy integration that, for each pulse, increases over the pulse duration to a maximum value and then decays. The lossy integration is sampled, with a sampling rate and decay rate such that the sample is within a given acceptable error of the maximum value. The sample represents the pulse total energy, within the given acceptable error. An optional circuit and processing function calculates a total accumulated energy over a plurality of pulses.

US Patent:

49083058, Mar 13, 1990

Filed:

Oct 21, 1987

Appl. No.:

7/110738

Inventors:

David B. Snyder - Seabrook MD

Assignee:

The University of Maryland - College Park MD

International Classification:

G01N 3353
G01N 33577
C07K 1514
C12N 100

US Classification:

435 5

Abstract:

A method for determining the level of infectious bursal disease virus IBDV neutralizing antibody in poultry comprising a labeled monoclonal antibody R63 having the IBDV neutralizing capability of the monoclonal antibody expressed by hybridoma cell line ATCC HB-9490. Monoclonal antibody R63 is specific to all known IBDV strains and serotypes and competes only with itself and other antibodies recognizing the same neutralizing epitope present in poultry sera. In a competition assay, the increase in unbound labeled monoclonal antibody is an indication of the level of IBDV neutralizing antibody present in poultry sera.

US Patent:

49564528, Sep 11, 1990

Filed:

Jun 12, 1987

Appl. No.:

7/061083

Inventors:

David B. Snyder - Lanham MD
Warren W. Marquardt - New Carrollton MD
Sammy L. Gorham - Upper Marlboro MD
Dolores P. Lana - Baltimore MD

Assignee:

The University of Maryland - College Park MD

International Classification:

C07K 1514
C07K 1528
C12N 1500
A61K 39395

US Classification:

530387

Abstract:

Monoclonal antibodies effective in preventing infectious bursal disease in chickens, by neutralizing one or more virus strains thereof, have been isolated and obtained from deposited hybridomas. Vaccination of an entire poultry population with a vaccine prepared from these monoclonal antibodies gives a uniform level of protection against all strains of infectious bursal disease tested. The monoclonal antibodies were effective in inducing priming for an active anti-viral response in a heterologous host.

US Patent:

50646460, Nov 12, 1991

Filed:

Aug 2, 1988

Appl. No.:

7/227311

Inventors:

David B. Snyder - Seabrook MD

Assignee:

The University of Maryland - College Park MD

International Classification:

A61K 3912
C12N 700

US Classification:

424 89

Abstract:

A new virus not neutralized or bound by monoclonal antibodies which bind and neutralize all IBD vaccines of current art, and capable of inducing infectious bursal disease in poultry is identified, in essentially pure form. A test kit, and assay for the presence of the virus is disclosed, together with the vaccine incorporating the virus.