JOE TURNER MAY
Pilots at Foxfield Ln, Leesburg, VA

4841156, Jun 20, 1989

May 15, 1987

7/049833

Joe T. May - Leesburg VA
Edward A. Casacia - Leesburg VA

Electronic Instrumentation and Technology, Inc. - Sterling VA

G01N 2164

2504611

An ultraviolet source (14) directs selected ultraviolet radiation onto a thin film (10) to excite it. The thin film fluoresces, either naturally or as a result of adding fluorescing material. The amount of light fluoresced is proportional to the film thickness. An optical filter (16) selectively transmits fluoresced wavelengths, excluding exciting wavelengths. A photodetector (18) converts the light to an electrical signal which is processed by signal processing circuits (20) and displayed on a readout (26). The output is compensated for variations in the intensity of the exciting ultraviolet radiation by generating a second electrical signal (13', 18') proportional to the intensity of the exciting radiation and dividing the first electrical signal by a function of said second electrical signal. The compensated output is then calibrated to assure precision and accurate measurements. Various materials may be selectively measured, individually in the presence of others by choosing appropriate excitation and emission wavelengths.

5382799, Jan 17, 1995

Dec 14, 1993

8/170083

Joe T. May - Leesburg VA

Electronic Instrumentation and Technology, Inc. - Sterling VA

G01J 100

250372

A self-contained, electro-optic instrument measures and displays the intensity emitted by an ultraviolet (UV) light source. The instrument is a portable, battery-operated device which has the size and shape of a flashlight. The measurement head receives various light guide adapters to provide a proper fit for a light guide of the UV spot curing system being used. Alternatively, the measurement head may be fitted with a wide angle lens to receive UV light for environment safety testing. In operation with a spot curing system, the instrument is gripped in one hand while the light guide is inserted in the adapter in the measurement head with the other hand. Once the spot curing system's light guide is inserted, a start switch on the body of the instrument is depressed and a measurement is taken. When the start switch is released, the measurement temporarily stored and displayed on a display, such as a liquid crystal display (LCD). Operation is similar for environmental safety testing except the instrument is simply pointed in a direction where the UV light is to be measured.

5157352, Oct 20, 1992

Nov 4, 1991

7/787568

David P. Chickanosky - Ashburn VA
Joe T. May - Leesburg VA

Electronic Instrumentation and Technology Inc. - Sterling VA

H03F 130

330289

A Peltier cooling system for solid-state operational amplifiers reduces the bias current and allows the amplifier to perform at a level previously attained only by vacuum tube operational amplifiers. The amplifier is cooled with a Peltier junction substantially below the ambient to control the temperature very closely to a fixed value. A solid-state temperature detector is placed in thermal contact with the operational amplifier substrate. The sensor output, which is proportional to he absolute temperature of the operational amplifier, is fed to the temperature control circuitry. The control circuitry compares the sensor current with a temperature set point current, and the difference is used to control the cooler current.

7601964, Oct 13, 2009

Apr 10, 2007

11/733516

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

Electronic Instrumentation & Technology, Inc. - Sterling VA

G01J 1/42

250372, 250365, 25037001

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.

6023066, Feb 8, 2000

Apr 3, 1998

9/054471

Michael Scott Cain - Purcellville VA
Joe T. May - Leesburg VA
Matthew J. McConnell - Ashburn VA
Robert D. Radcliff - Houston TX
Christopher S. Rogers - Sterling VA

Electronic Instrumentation and Technology, Inc. - Sterling VA

G01J 100

250372

An ultraviolet (UV) radiometer includes as one component a data collection unit which is sufficiently small that it can be placed in UV curing applications which have normally been inaccessible as another component a data reader into which the data collection unit is inserted for displaying and/or processing the actual data collected by the data collection unit during a process run. Because of its small size, the data collection unit makes it possible to obtain true process control in applications that could not previously be monitored. After making a dosage measurement, the data collection unit is inserted into the data reader to display the actual data collected during a UV curing run. After reading the data in the data collection unit, the data reader clears the previously stored data and resets the unit to take a new dosage reading.

D451413, Dec 4, 2001

Nov 30, 2000

D/133403

Joe T. May - Leesburg VA
Michael Scott Cain - Purcellville VA
James M. Raymont - Sterling VA
Christopher S. Rogers - Sterling VA
Christopher S. Shorter - Aldie VA

Electronic Instrumentation & Technology, Inc. - Sterling VA

1004

D10 47

4938602, Jul 3, 1990

Mar 27, 1989

7/329293

Joe T. May - Leesburg VA
Edward A. Casacia - Leesburg VA

Electronic Instrumentation and Technology, Inc. - Sterling VA

G01N 2185

356435

Instrumentation for measuring the amount of material dissolved in a liquid solution which utilizes electro-optic technology based on the Beer-Lambert Law is implemented either as a portable, battery powered model or integrated in an automated process monitoring system. In the portable, battery powered model, a sample probe (14) is inserted into a solution to be measured. The results of the measurement are displayed on a display (22). The displayed results are frozen for a predetermined period of time at the expiration of which, the power is turned off to conserve battery power. In the automated process monitoring model, a solution loading analyzer (100) is supplied with a sample of solution to be analyzed. A probe (14) positioned in a measurement well (200) is used to determine the ratio of incident light to light transmitted through the sample. A spray nozzle (212) is used for cleaning the probe head (16).

4644165, Feb 17, 1987

Feb 22, 1983

6/468279

Malcolm G. Ross - Plymouth MN
Joe T. May - Leesburg VA
Steven D. Hale - Lovettsville VA

Colight, Inc. - Minneapolis MN

G01J 146

250372

An integrating photometer for measuring total exposures to ultraviolet radiation. The circuit for the photometer includes a threshold limiter to suppress operation of the integrator until the illumination level exceeds a predetermined threshold. A power saving circuit turns the photometer off when no illumination is received during a predetermined time interval.

4685074, Aug 4, 1987

Nov 13, 1984

6/670647

Joe T. May - Leesburg VA
Steven D. Hale - Lovettsville VA

Electronic Instrumentation and Technology - Sterling VA

G01B 1128, G06G 1546

364564

An instrument for use with a film containing a printed circuit layout. The instrument measures the area which is transparent to electromagnetic radiation of a characteristic wavelength so that the open area of the film and the average open area can be calculated and displayed. A source oriented in a direction perpendicular to the transport path emits radiation of the characteristic wavelength across a width of the film. A plurality of detecting devices responsive to the characteristic wavelength are arranged in a linear array in optical coordination with the source. Each detecting device detects radiation transmitted through an incremental area of the film and produces an output signal representative thereof. A detector circuit connected to receive the output signals repeatedly and sequentially provides digital area signals proportional to the amount of clear area within a respective incremental area of film. A microcomputer receives the area signals and computes the total clear area.

6278120, Aug 21, 2001

Apr 28, 1999

9/301485

Joe T. May - Leesburg VA

Electronic Instrumentation and Technology, Inc. - Sterling VA

G01J 104

250372

A UV sensor design which virtually eliminates solarization effects on optical components and photodetector and is effective for both broad area and collimated light sources. The sensor design reduces the number of photons striking a unit area of any of the materials in the light path sensitive to UV light to a level which does not produce appreciable solarization over very long periods of time. The UV sensor has as the first optical element in the viewing path a UV transmitting, extremely low solarization window. The back surface of this window is frosted to produce some diffusion of the UV rays. A small metal disc with a very small aperture is the next optical element and reduces the total amount of energy admitted to the optical measurement system. A second frosted UV transmitting, extremely low solarization window further diffuses the light beam passing through the aperture. The UV light from this second window travels toward to two UV filters and is further dispersed to produce low intensity level UV light which impinges on a silicon photodetector.