Patent application number | Description | Published |
20080226961 | Electrolyte/membrane assembly for fuel cell, and fuel cell incorporating that assembly - An electrolyte membrane assembly for use in a fuel cell or other electrochemical device includes an ion exchange membrane, a base electrolyte reservoir configured and operable to maintain a volume of a basic electrolyte solution in contact with at least some of the first face of the membrane, and an acid electrolyte reservoir configured and operable to maintain a volume of an acidic electrolyte in contact with at least a portion of the second face of the membrane. The membrane may be a cation exchange membrane or an anion exchange membrane. Also disclosed are fuel cells which incorporate the electrolyte membrane assembly. | 09-18-2008 |
20090263700 | FUEL CELL ASSEMBLY - A fuel cell assembly is comprised of a plurality of stack units. Each stack unit includes a first cell and a second cell, and each cell includes an electrode of a first polarity and an electrode of a second polarity, with an ion permeable membrane disposed therebetween. The stack unit further includes a fuel container which comprises a housing defining a fuel chamber having a first and second open surface. The first and second cells are disposed on opposite sides so that electrodes of each cell having the first polarity are disposed in fluid contact with the fuel chamber. The assembly further includes an oxidizer supply member disposed between adjacent pairs of stack units. The oxidizer supply member includes an oxidizer chamber having first and second open surfaces. The oxidizer supply member is disposed so that electrodes of the second polarity of adjacent stack units are in fluid contact with the chamber of the oxidizer supply member. The various stack units can be electrically interconnected in series, parallel, or mixed series parallel relationship. The fuel cell stack assembly are configured to operate in conjunction with a liquid fuel such as an alcohol, and using air as an oxidizer. | 10-22-2009 |
20100227256 | FUEL CELL ASSEMBLY - A passive fuel cell assembly, in which there is neither air pump, nor fuel pump, is comprised of a plurality of bi-cell units. Each bi-cell unit includes a first cell and a second cell, and each cell includes an electrode of a first polarity and an electrode of a second polarity, with an ion permeable membrane disposed therebetween. The bi-cell unit further includes a fuel container which comprises a housing defining a fuel chamber having a first and second open surface. The first and second cells are disposed on opposite sides so that electrodes of each cell having the first polarity are disposed in fluid contact with the fuel chamber. The assembly further includes an oxidizer supply member disposed between adjacent pairs of bi-cell units. The oxidizer supply member includes an oxidizer chamber having four sides to take in air, and having first and second open surfaces. The oxidizer supply member is disposed so that electrodes of the second polarity of adjacent bi-cell units are in fluid contact with the chamber of the oxidizer supply member. The various bi-cell units may be electrically interconnected in mixed series parallel relationship to obtain long operational life. The fuel cell bi-cell assembly may be configured to operate in conjunction with a liquid fuel such as an alcohol, and using air as an oxidizer. | 09-09-2010 |
20100255375 | MOLYBDENUM/AIR BATTERY AND CELL DESIGN - A metal-air battery has an anode in which the electrochemically active material is molybdenum. The molybdenum may be in the form of a bulk body of material or it may comprise a particulate material dispersed with or in another material. In some instances, the molybdenum may comprise a member of an alloy or mixture. Also disclosed is a modular battery system which may include the molybdenum-based anode material. | 10-07-2010 |
20110110836 | DESULFURIZATION APPARATUS AND METHOD - A method and system for desulfurization comprising first and second metal oxides; a walled enclosure having an inlet and an exhaust for the passage of gas to be treated; the first and second metal oxide being combinable with hydrogen sulfide to produce a reaction comprising a sulfide and water; the first metal oxide forming a first layer and the second metal oxide forming a second layer within the walled surroundings; the first and second layers being positioned so the first layer removes the bulk amount of the hydrogen sulfide from the treated gas prior to passage through the second layer, and the second layer removes substantially all of the remaining hydrogen sulfide from the treated gas; the first metal oxide producing a stoichiometrical capacity in excess of 500 mg sulfur/gram; the second metal oxide reacts with the hydrogen sulfide more favorably but has a stoichiometrical capacity which is less than the first reactant; whereby the optimal amount by weight of the first and second metal oxides is achieved by utilizing two to three units by weight of the first metal oxide for every unit of the second metal oxide. | 05-12-2011 |
Patent application number | Description | Published |
20080247705 | Hermaphroditic u-guide alignment structures and method thereof - An integrated optical waveguide circuit apparatus having an optical processing area, waveguide ports for optical processing, and at least one waveguide structure, the at least one waveguide structure going around the optical processing area. Methods for making the integrated optical waveguide circuit apparatus are also disclosed. | 10-09-2008 |
20090245796 | OPTICAL RECEIVER INCLUDING A FILTER ON A PLANAR LIGHTWAVE CIRCUIT - A planar lightwave circuit (PLC) includes a substrate, a tunable filter, a demultiplexer (DEMUX), and an optical processor each disposed on the substrate. The tunable filter is configured to filter at least one of a bandwidth or a wavelength of a Wavelength Division Multiplexed (WDM) optical input signal. The DEMUX is connected to the tunable filter and configured to receive a filtered WDM optical input signal at an input and to supply one of a plurality of channels of the filtered WDM input signal at a respective one of a plurality of outputs. Each of the plurality of channels corresponds to one of a plurality of wavelengths of the filtered WDM input signal. The optical processor includes a bit-delay interferometer communicating with a respective one of the plurality of outputs of the DEMUX. The optical processor is configured to receive one of the plurality of channels from the DEMUX and output a plurality of demodulated optical signal components. | 10-01-2009 |
20090245801 | RECEIVER ON A PHOTONIC IC - An optical receiver includes a first substrate including a demultiplexer and a first optical waveguide array. An input of the demultiplexer is configured to receive a wavelength division multiplexed optical input signal having a plurality of channels. Each of the plurality of channels corresponds to one of a plurality of wavelengths. Each of the plurality of outputs is configured to supply a corresponding one of the plurality of channels. The first optical waveguide array has a plurality of inputs. Each of the inputs of the first optical waveguide array is configured to receive a corresponding one of the plurality of channels. A second substrate is in signal communication with the first substrate and includes an optical detector array. The optical detector array has a plurality of inputs, each of which is configured to receive a corresponding one of the plurality of channels and generate an electrical signal in response thereto. | 10-01-2009 |
20100296161 | POLARIZATION INSENSITIVE OPTICAL CIRCUIT - The present invention, in one embodiment contemplates a polarization insensitive optical circuit constructed of an input/output signal separator, such as an optical circulator or a 1×2 or 2×2 coupler or N×M coupler, a polarization sensitive operator, and a polarization rotator reflector. In an alternate embodiment, the invention contemplates a polarization insensitive optical circuit comprising a polarization rotator reflector, and a polarization sensitive operator which may comprise for example a first polarization rotator, an operator/coupler, and a polarization beam combiner. Preferably at least one of the components in the optical circuit is constructed integrally from the substrate upon which the optical circuit is based. For example the polarization rotator and/or polarization sensitive operator of the present invention may be monolithic. | 11-25-2010 |
20100302637 | POLARIZATION INSENSITIVE OPTICAL CIRCUIT - The present invention, in one embodiment contemplates a polarization insensitive optical circuit constructed of an input/output signal separator, such as an optical circulator or a 1×2 or 2×2 coupler or N×M coupler, a polarization sensitive operator, and a polarization rotator reflector. In an alternate embodiment, the invention contemplates a polarization insensitive optical circuit comprising a polarization rotator reflector, and a polarization sensitive operator which may comprise for example a first polarization rotator, an operator/coupler, and a polarization beam combiner. Preferably at least one of the components in the optical circuit is constructed integrally from the substrate upon which the optical circuit is based. For example the polarization rotator and/or polarization sensitive operator of the present invention may be monolithic. | 12-02-2010 |
Patent application number | Description | Published |
20090286305 | Method for non-destructive macromolecule extraction from biological samples on slide - A thin layer of a biological sample, such as a section of frozen or preserved tissue sample, a section of fresh or preserved cells, and a mono layer of prokaryotic and eukaryotic cells, is placed on a flat surface of a solid supporting base. Macromolecules, such as DNA, RNA, and proteins, are extracted directly from the thin layer of the biological sample that is attached to the supporting base. | 11-19-2009 |
20100112577 | APPARATUS AND METHODS FOR EFFICIENT PROCESSING OF BIOLOGICAL SAMPLES ON SLIDES - Methods for treating biological samples on microscope slides are set forth. One aspect of the invention is the use of predried reagents in wells on trays onto which the slides are placed, especially the use of predried reagents which dissolve sequentially. Yet another aspect of the invention is the use of external controls placed directly on a microscope slide in conjunction with a biological sample to be assayed. The external controls can be conveniently placed on a membrane which can be affixed to the slide. A further aspect of the invention is a specially designed tray to allow whole chromosome painting of all chromosomes of a cell sample on a single slide. The invention is also drawn to a coverslip with concave wells which act as reaction chambers when placed against a slide and filled with buffer. Preferably a reagent is predried in the well. A further aspect of the invention is a method of reacting samples on slides by placing them into a reaction chamber together with a coverslip which has a predried reagent on it. | 05-06-2010 |
20100182877 | ULTRASOUND-MEDIATED HIGH-SPEED BIOLOGICAL REACTION AND TISSUE PROCESSING - Methods of fixing and processing tissue and samples on a membrane by using ultrasound radiation as a part of the method are presented. Ultrasound of a frequency in the range of 0.1-50 MHz is used and the sample or tissue receives 0.1-200 W/cm | 07-22-2010 |
20120270293 | STANDARDIZATION OF TISSUE SPECIMEN PRESERVATION BY ULTRASOUND AND TEMPERATURE CONTROL - A tissue sample preservation process and device for improving and standardizing tissue preservation procedure, including placing tissue specimens in a cold fixative, performing fixative penetration at a refrigerated temperature, and accelerating fixative penetration by ultrasound. Also disclosed is the application of ultrasound and temperature control in the dehydration, clearing, and impregnation steps. | 10-25-2012 |