Sarnoff Corporation

Delsys Pharmaceutical Corporation

Other

David Sarnoff Research Center, Inc.

Blue Marlin LLC

Delsys Pharmaceautical Corporation

Timothy Allen Pletcher

Pabitra Datta

Robert Amantea

Randall Eugene McCoy

Christopher Just Poux

David A Keller

Hoi Cheong Sun

Min-Sung Yang

Joseph Thomas McGinn

Peter James Coyle

Hoi Cheong Steve Sun

Jae-Hong Joo

Peter John Zanzucchi

William Ronald Roach

Nitin Vithalbhai Desai

John Gregory Aceti

Peter David Southgate

David Norman Ludington

Frank B Lang

Eugene Samuel Poliniak

James Regis Matey

Robert Richard Demers

Richard Morgan Moroney, Iii

Howard Christopher Rivenburg

Timothy James Davis

John Paul Furda

Vipulkumar K Patel

Jae-Young Choi

Donald Chester Pultorak

Herschel Clement Burstyn

Joo-Dong Yu

Steven Warshawsky

Heon-Kyu Kim

Wen Ho

Bok-Man Kim

John Thomas McGinn

Mortaza Kashef

Shakuntala Mangru

Jae-Hwan So

The present invention provides a ballast circuit and method for fabricating the same for multi-electrode corona discharge arrays. The circuit includes a conductive plastic material and at least one corona electrode protruding from the conductive plastic material. The distance between the plastic material and the corona electrode varies and controls the electrical resistance and determines the voltage breakdown of the circuit. Additionally, a particle collection surface may preferably be located within the conductive plastic material or preferably be separated from the material depending on the circuit design and configuration.

Ballast circuit for electrostatic particle collection systems

An apparatus for airborne particle sorting is provided comprising a charging system adapted for applying an electrostatic charge to the particles, such that particles of at least a first group are deflected to a greater extent than particles of a second group are deflected. A focusing system is adapted for electrostatically focusing substantially at least the particles of the first group into a focused stream that is narrower than the input air stream. A deposition system is adapted for substantially depositing the particles of the first group from the focused stream upon a target surface, where the target surface may be transported to an analysis system capable of analyzing the particles deposited thereon.

Method and apparatus for airborne particle sorting

The present invention relates to a methods, apparatuses and systems that utilize electric currents to direct the deposition of particulate matter to various surfaces.

System and method for spatially-selective particulate deposition and enhanced deposition efficiency

Embodiments of an apparatus for collecting biological aerosols from an air sample include a hollow tube adapted for pumping a liquid through an interior volume to an outer surface and a collection surface disposed on the outer surface and adapted for collecting the airborne particles from the surrounding air sample. Collection efficiency is enhanced by a charging mechanism that applies a charge to the airborne particles such that the airborne particles are deflected toward the collection surface. Embodiments of operation for the apparatus include the steps of providing the air sample, directing the air sample toward the hollow tube, and applying a charge to the airborne particles such that the airborne particles deposit on the collection surface/outer surface of said hollow tube.

Method and apparatus for airborne particle collection

The invention is directed to a corona charging device having a powder feed with an outlet. The device has an internal charging cavity having an inlet and a charged powder outlet. The powder feed outlet is positioned at the internal charging cavity inlet. The device is adapted to guide a powder stream downstream from the powder feed outlet to the charged powder outlet. The device also includes a corona charger having one or more needle projections (each having a tip) positioned and adapted to facilitate a corona ion flow from the needle projections and intersecting the powder stream. The device also includes a rotating ground electrode adapted to be charged or grounded to attract the corona flow from the needle projections, and to rotate segments of the ground electrode between the internal charging cavity and a ground electrode cleaner.

Corona charging device and methods

A device detects the location of objects in an environment by receiving an optical image and converting the optical image of the lost object into a color digital image. The device employs software to perform an analysis of the color digital image to detect the location of the one or more objects in the environment by using color and shape characteristics of the one or more objects. The software uses a range of the visible portion of the color space uniquely identified for the type of object in that environment and identifies those pixels in the color digital image that may be possible targets. Intensity of background and object size are used to exclude pixels as possible target objects.

Method and imager for detecting the location of objects

An apparatus for collecting biological aerosols from an air sample is provided comprising an air intake assembly adapted to draw the air sample into the apparatus, a separation section coupled to the intake assembly and adapted to separate aerosol particles from the air sample, a capture section coupled to the separation section and adapted to transport the aerosol particles in a stream of liquid, and a hydrophobic membrane disposed between the separation section and the capture section and adapted to establish a controllable air/fluid boundary therebetween. Further embodiments of the apparatus comprise an air intake assembly adapted to draw the air sample into the apparatus, a separation section coupled to the intake assembly and adapted to separate aerosol particles from the air sample, a capture section coupled to the separation section and adapted to transport the aerosol particles in a stream of liquid, and a corona charging section disposed between the separation section and the capture section and adapted to focus the aerosol particles into the stream of liquid.

Method and apparatus for concentrated airborne particle collection

Apparatus and a concomitant method for electrostatically depositing select doses of medicament powder at select locations on a substrate. Specifically, the apparatus contains a charged particle emitter for generating charged particles that charge a predefined region of a substrate and a charge accumulation control circuit for computing the amount of charge accumulated upon the substrate and deactivating the emitter when a selected quantity of charge has accumulated. Additionally, a triboelectric charging apparatus charges the medicament powder and forms a charged medicament cloud proximate the charged region of the substrate. The medicament particles within the medicament cloud electrostatically adhere to the charged region. The quantity of charge accumulated on the substrate at the predefined region and the charge-to-mass ratio of the medicament powder in the cloud control the amount (dose) of medicament deposited and retained by the substrate. Consequently, this apparatus accurately controls both medicament dosage and deposition location. Furthermore, since the substrate can be of any dielectric material that retains an electrostatic charge, the apparatus can be used to deposit medicament on substrates that are presently used in oral medicament consumption, e.g., substrates that are used to fabricate suppositories, inhalants, tablets, capsules and the like.

Method and apparatus for electrostatically depositing a medicament powder upon predefined regions of a substrate

Provided is an electrostatic sensing chuck for attracting particles to a portion of a particle contact surface near a deposition electrode, the electrostatic sensing chuck comprising a pixel comprising: a deposition electrode (DE) for selectively establishing an attraction field (E ) at the particle contact surface; a shield electrode (SE) oppositely biased with respect to the deposition electrode; a charge sensing circuit to measure charge accumulated on each of the deposition electrode and the shield electrode, wherein the charge sensing circuit subtracts a second charge it senses at the shield electrode from a first charge it senses at the deposition electrode, thereby determining accumulated charge at the deposition electrode balanced by accumulated charge at the shield electrode.

Electrostatic sensing chuck using area matched electrodes

The present invention is directed to electrostatic chucks, methods for their use, the electrostatic deposition of objects, such as particles in a dry powder, onto recipient substrates, and the recipient substrates themselves that have been subjected to electrostatic deposition. In one aspect, the present invention provides an electrostatic chuck for electrostatically attracting an object or objects wherein the object is used in chemical or pharmaceutical assaying or manufacturing. The objects can be pharmaceutical substrates, for example, such as a pharmaceutical tablet. Additional embodiments of the invention provide chucks and their use to electrostatically attract particles, such as a pharmaceutically active ingredient, to a substrate, such as a tablet. In one aspect, the electrostatic chuck comprises a floating electrode, and is used to selectively attract particles to a substrate above the floating electrode, thereby providing for charge imaging for the deposition of particles in a selected image. Additionally, the invention provides comprising a sensing electrode, optionally for use with an electrostatic chuck, for sensing the number of particles attracted to the objects on the chuck or other substrate, thereby providing for deposition of an accurate amount of particles. Furthermore, the present invention provides objects having selected areas in which particles are applied to the object via electrostatic means.

Method of depositing particles with an electrostatic chuck

A spraying device for dispensing electrostatic liquid droplets includes a container holding a liquid at one end, and having a nozzle assembly with an aperture at another end. The nozzle assembly includes a longitudinal hollow tube terminating in a metallic structure. The metallic structure includes a metallic base plate having at least one aperture formed therein for fluid communication with the hollow tube. The longitudinal hollow tube includes an end inserted in the liquid. A charge accumulator disposed in the liquid accumulates electrostatic charges. A wire conductor between the base plate and the charge accumulator transfers the electrostatic charges from the liquid to the nozzle assembly.

Spraying device for dispensing home care formulations with electrostatic liquid droplets

A power supply according to the principles of the inventions comprises two stages. The first stage is a power factor corrector stage. This stage provides the required line regulation, including greater than 95% power factor correction, and provides a range of outputs from approximately 5 volts to 200 volts with good load regulation at low voltages. The second stage is a soft switching power supply having good load regulation from approximately 40 to approximately 175 volts. An intermediate high voltage of the first stage supplies the input to the second stage, thereby achieving extremely good line regulation and low regulation.

Two stage architecture for a monitor power supply

A converter utilizing a multifilar transformer having its primary and auxiliary windings made simultaneously, a technique known as bifilar winding, provides high efficiency and low noise. The multifilar winding technique yields minimum leakage inductance between the windings and reduces the proximity effect to a minimum achievable using most well-known wires. The converter utilizes an improved soft-switcher topology which advantageously reduces the interwinding capacitance between the primary and auxiliary windings of the transformer. The topology includes a resonant LC circuit interposed in series with one leg of the auxiliary winding and the auxiliary switch. The other leg of the auxiliary winding is at ground. A controller is provided to control switch timing such that the converter optimizes switch loss and resonant pulse loss.

Soft-switching power supply with auxiliary resonator

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Eastampton, NJ, United States of America

Timothy Allen Pletcher