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Colles
Joseph Hubert Colles, Bonsall, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20120019322 | LOW DROPOUT CURRENT SOURCE - Disclosed is a low dropout current source that includes a first field effect transistor (FET), a second FET having a drain that is an output for an output voltage and an output current, and a third FET, wherein a gate of the first FET is coupled to both a gate of the second FET and a drain of the third FET, and wherein a drain of the first FET is coupled to a source of the third FET. A differential amplifier has an inverting input coupled to the drain of the first FET, a non-inverting input coupled to the drain of the second FET and an amplifier output coupled to the gate of the third FET. A current reference is coupled between the drain of the third FET and a fixed voltage node. The current reference provides a reference current that is multiplied and output from the third FET. | 01-26-2012 |
| 20120019405 | CURRENT DAC - A current digital-to-analog converter (DAC) is disclosed. The current DAC includes a current reference circuit coupled between a voltage source terminal and a voltage node, wherein the current reference circuit includes a feedback node. A switchable resistor network is communicably coupled to the feedback node of the current reference circuit via a first feedback network that is adapted to equalize a first voltage across the switchable resistor network voltage with a second voltage between the feedback node and the voltage node. A current mirror includes an output node communicably coupled to the switchable resistor network via a second feedback network that is adapted to equalize an output current that flows from the output node with an input current that flows into the switchable resistor network. | 01-26-2012 |
Lance Colles, Mt. Sterling, KY US
| Patent application number | Description | Published |
|---|---|---|
| 20110315554 | Satin nickel electroplating techniques that include homogenization units - Certain example embodiments of this invention relate to improved electroplating techniques. More particularly, certain example embodiments of this invention relate to electroplating techniques that incorporate a homogenization unit to help maintain an emulsion within an electrolyte solution (e.g., a nickel electrolyte solution) used in creating a finish (e.g., a satin nickel finish) in an electroplating process. By varying the operational characteristics of the unit (including, for example, pressure, velocity, pore size, ultrasound wave frequency, sonication time, etc.), it becomes possible to control the emulsion particle size distribution so as, for example, increase or decrease the diameter of such particles and thereby resulting in a deposit with a desired surface topography. It will be appreciated that the variations in size will cause variation in surface topography which, in turn, will change the surface appearance. | 12-29-2011 |
Michael John Colles, West Sussex GB
| Patent application number | Description | Published |
|---|---|---|
| 20100305494 | METHOD FOR PHOTODYNAMIC THERAPY AND APPARATUS THEREFOR - Photodynamic therapy is used in the treatment of orthopaedic infections. Particularly, it is used in the treatment of infections related to orthopaedic conditions and surgery and includes treatment of sites of deterioration or trauma, such as prior to and after prosthetic fixation such as joint replacement or treatment of trauma sites such as pinning of bone fractures. An orthopaedic disinfection apparatus includes a photosensitiser and a light delivery system capable of producing and delivering light at a wavelength which is capable of being absorbed by the photosensitiser. Methods of treatment of orthopaedic infections are also disclosed. | 12-02-2010 |
Michael John Colles, Sussex GB
| Patent application number | Description | Published |
|---|---|---|
| 20100143857 | PHOTO-ACTIVATED DISINFECTION - Photo-activated disinfection in the oral cavity is performed by a dental apparatus which includes a handpiece having proximal and distal portions, and a handpiece cover. The distal portion of the handpiece includes light emitting elements. The handpiece cover includes a sleeve adapted to provide a cover to the proximal portion of the handpiece and a sheath adapted to provide a cover to the distal portion of the handpiece. Suitably, the sleeve is a disposable component. | 06-10-2010 |
Michael John Colles, London GB
| Patent application number | Description | Published |
|---|---|---|
| 20080214530 | Photo-Activated Disinfection - The present invention relates to photo-activated disinfection. In particular, the present invention relates to photo-activated disinfection in the oral cavity. We describe a dental apparatus comprising a light source producing light at a predetermined wavelength and power, and optical transmission means to train the light from the light source onto at least one external side of a tooth. Preferably, the optical transmission means comprises at least one optical guide. In a preferred embodiment, the optical transmission means comprises a pair of substantially parallel elongate light guides each light guide having a distal end provided with a reflective surface inclined at 45° to the direction of light transmission along the light guides, the reflective surfaces of the light guides being opposed such that light emitted from each light guide is parallel but opposite in direction. Preferably, the light source is a light emitting diode or array of light emitting diodes and the has a wavelength of from 550 to 690 nm, more preferably from 600 nm to 680 nm, even more preferably from 625 to 660 nm. | 09-04-2008 |