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Homa
Ari Homa, Kirkland, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090023036 | LIQUID-LIQUID FUEL CELL SYSTEMS HAVING FLOW-THROUGH ANODES AND FLOW-BY CATHODES - The invention disclosed herein relates to fuel cell electrode pair assemblies, not having interposing proton exchange membranes, configured to receive and react with liquid anolyte and liquid catholyte microfluidic flowstreams. In one embodiment, the present invention is directed to a fuel cell electrode pair assembly, not having an interposing proton exchange membrane, configured to receive and react with a liquid microfluidic anolyte flowstream (e.g., laminarly flowing methanol solution) and a liquid microfluidic catholyte flowstream (e.g., laminarly flowing nitric acid solution), wherein the fuel cell electrode pair assembly comprises: a porous flow-through anode; a porous flow-by cathode confronting and spaced apart from the anode; and a central plenum interposed between and connected to the anode and the cathode. | 01-22-2009 |
Daniel Homa, Blacksburg, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20080292256 | Optical Fiber with Tin Doped Core-Cladding Interface - The present invention concerns an optical fiber | 11-27-2008 |
| 20100158459 | Long Lifetime Optical Fiber and Method - A fiber optic construction is described combining low OH (preferably <1 ppm) materials for use in the core and cladding elements with controlled D | 06-24-2010 |
| 20100166358 | Dual Fiber Grating and Methods of Making and Using Same - A multiple-layer fiber-optic sensor is described with dual Bragg gratings in layers of different materials, so that the known temperature and strain response properties of each material may be utilized to simultaneously correct the sensor output for temperature and strain effects. | 07-01-2010 |
| 20100303403 | ON-LINE FIBER BRAGG GRATING DITHERING - An apparatus for determining a property, the apparatus including: an optical fiber having a series of fiber Bragg gratings, each fiber Bragg grating in the series being characterized by a light reflection frequency at which the fiber Bragg grating reflects light; wherein: the light reflection frequency for each fiber Bragg grating is different from the light reflection frequency of each adjacent fiber Bragg grating to minimize resonance of light between at least two of the fiber Bragg gratings in the series; at least two fiber Bragg gratings in the series have light reflection frequencies that overlap; and a change in the light reflection frequency of each fiber Bragg grating in the series is related to the property at the location of the each fiber Bragg grating. | 12-02-2010 |
| 20110135246 | BEND INSENSITIVE OPTICAL FIBER WITH IMPROVED HYDROGEN RESISTANCE - An optical fiber includes: a core including a photosensitive material disposed therein, the core having a first index of refraction; a depressed cladding surrounding the core and having a second index of refraction that is lower than the first index of refraction; and an outer cladding surrounding the depressed cladding and having a third index of refraction that is higher than the depressed cladding. | 06-09-2011 |
| 20110138861 | OPTICAL FIBER MANUFACTURING METHOD AND APPARATUS - A method of manufacturing an optical fiber includes: disposing an axially extending preform structure on a support structure; directing a gas mixture along a major axis of the preform structure in a first axial direction; disposing a heating device proximate to the preform structure; and activating the heating device and moving the heating device along the major axis in a second axial direction to heat the preform structure and deposit at least one layer of material on the preform structure, the second axial direction being opposite to the first axial direction. | 06-16-2011 |
Daniel S. Homa, Blacksburg, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20110110620 | ROTATED SINGLE OR MULTICORE OPTICAL FIBER - An apparatus for estimating a shape, the apparatus including: an optical fiber configured to conform to the shape and having a first core offset from a centerline of the optical fiber, the first core having an optical characteristic configured to change due to a change in shape of the optical fiber wherein a change in the optical characteristic is used to estimate the shape. A method for estimating a shape is also disclosed. | 05-12-2011 |
| 20110170116 | EFPI SENSOR - An apparatus for estimating a property, the apparatus includes: a hollow core tube having a first opening and a second opening; a first optical waveguide disposed within the first opening; and a second optical waveguide disposed within the second opening and spaced a distance from the first optical waveguide, the distance being related to the property; wherein a portion of at least one of the optical waveguides within the tube is perimetrically isolated from the tube. | 07-14-2011 |
| 20110172959 | MULTI-GAP INTERFEROMETRIC SENSORS - An apparatus for estimating a property includes a hollow core tube and an input light guide disposed at least partially within hollow core tube. The apparatus also includes a second gap disposed within the hollow core tube and separated from the input light guide by an air gap width. The second gap is formed of a first solid material and has a second gap width. The apparatus also includes a third gap disposed at least partially within the hollow core tube and being further from the input light guide than the second gap. The third gap is formed of a second solid material and has a third gap width. | 07-14-2011 |
Daniel Scott Homa, Blacksburg, VA US
| Patent application number | Description | Published |
|---|---|---|
| 20110293232 | Hydrogen-resistant optical fiber/grating structure suitable for use in downhole sensor applications - A hydrogen-resistant optical fiber particularly well-suitable for downhole applications comprises a relatively thick pure silica core and a depressed-index cladding layer. Interposed between the depressed-index cladding layer and the core is a relatively thin germanium-doped interface. By maintaining a proper relationship between the pure silica core diameter and the thickness of the germanium-doped interface, a majority (preferably, more than 65%) of the propagating signal can be confined within the pure silica core and, therefore, be protected from hydrogen-induced attenuation problems associated with the presence of germanium (as is common in downhole fiber applications). The hydrogen-resistant fiber of the present invention can be formed to include one or more Bragg gratings within the germanium-doped interface, useful for sensing applications. | 12-01-2011 |
Johannes Homa, Wien AT
| Patent application number | Description | Published |
|---|---|---|
| 20100283188 | METHOD AND DEVICE FOR THE GENERATIVE PRODUCTION OF A SHAPED BODY HAVING NON-PLANAR LAYERS - The present invention relates to a method for the generative production of a shaped body ( | 11-11-2010 |
Johannes Homa, Feldkirch AT
| Patent application number | Description | Published |
|---|---|---|
| 20120010066 | LIGHT-CURING CERAMIC SLIPS FOR THE STEREOLITHOGRAPHIC PREPARATION OF HIGH-STRENGTH CERAMICS - Slip based on radically polymerizable binder, polymerization initiator and filler, which comprises (A) at least one acidic monomer of general formula I | 01-12-2012 |