| Patent application number | Description | Published |
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| 20080274384 | SELF-REGULATING HYDROGEN GENERATOR FOR USE WITH A FUEL CELL - A hydrogen generation device includes a liquid fuel chamber, a catalytic hydrogen generation chamber, a hydrogen collection chamber and separation elements between these chambers. Once a certain hydrogen pressure in the device is reached liquid fuel is substantially prevented from being catalytically converted into hydrogen, whereby the production of hydrogen is stopped until hydrogen is allowed to exit the device to lower the pressure therein. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way. | 11-06-2008 |
| 20090029196 | Dry method of making a gas diffusion electrode - A substantially dry method of making a gas diffusion electrode such as, e.g., an air cathode for a fuel cell or a metal-air battery cell. The method comprises forming an intimate mixture of catalytically active carbon particles and particles of a wet-proofing agent into a web; combining under pressure the web of with a current collector to form a current collector-web composite; and attaching a porous sheet of a fluorinated polymer to one side of the current collector-web composite of to form an air cathode. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way. | 01-29-2009 |
| 20090092861 | INTEGRATED FUEL CELL CONTROLLER FOR DEVICES - Power unit for an electronic device and process for control and regulation of an electronic device powered by a fuel cell. Power unit includes a fuel cell having a low output voltage between 0.3 and 1V, and a conversion device coupled to the fuel cell to convert an input voltage as low as 0.3 V to a higher output voltage to operate the electronic device. | 04-09-2009 |
| 20090136796 | FUEL CELL SYSTEM AND METHOD OF ACTIVATING THE FUEL CELL - Fuel cell system including a fuel cell assembly having an anode and a cathode. A fuel/electrolyte module includes a liquid fuel and/or a liquid electrolyte and/or components of the liquid fuel and/or the liquid electrolyte. A housing arrangement houses the fuel cell assembly and the fuel/electrolyte module. A system is used for transferring at least a part of the contents of the fuel/electrolyte module into the fuel cell assembly. A method is also disclosed of generating electrical power using a power system including at least one fuel cell unit having a fuel cell assembly and a fuel/electrolyte module arranged within a housing arrangement. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way. | 05-28-2009 |
| Patent application number | Description | Published |
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| 20100044032 | Method for completion, maintenance and stimulation of oil and gas wells - A method for inducing motion in solid particulates in a solid/liquid mixture located in proximity to the periphery of a wellbore or in the formation zone adjacent to a wellbore in an oil or gas formation. The method includes introducing a gas impulse device into the wellbore. It then requires firing the gas impulse device so as to generate impulses of high pressure compressed gas, thereby to produce pressure waves within the wellbore and its surrounding formation. This causes motion of the solid particulates which permits settling and/or redistribution of the solid particulates. In some cases it even causes particulate flow, as in cold heavy oil production with sand (CHOPS). The method also frees blockages caused by the solid particulates and stimulates productivity. The method may inter alia be used in gravel pack construction and maintenance, well cementing operations and in CHOPS stimulation. | 02-25-2010 |
| 20100044047 | Method for impulse stimulation of oil and gas well production - A method for fracturing an oil or gas formation. The method includes introducing a gas impulse device into a wellbore followed by pumping a pressurized liquid into a wellbore at a pressure equal to or lower than the estimated fracture pressure of the formation. Finally, the method includes firing the gas impulse device periodically so that the device releases high pressure compressed gas impulses. The impulses when expanding through the pumped pressurized liquid substantially instantaneously increases the fracturing liquid flow rate into the oil or gas formation. It causes the total pressure to exceed the actual fracturing pressure of the formation thereby initiating or extending fractures in the formation stimulating the flow of the oil or gas therefrom into the wellbore. Use of the method of the invention in waterflooding and preventing lost circulation is also described. | 02-25-2010 |
| 20110088905 | METHOD FOR IMPULSE STIMULATION OF OIL AND GAS WELL PRODUCTION - A method for improving liquid injection into a rock formation. The method includes the steps of introducing a gas impulse device into a wellbore in the formation and pumping a pressurized liquid into the wellbore. The method also includes firing the gas impulse device periodically so that the device generates impulses of high pressure compressed gas. The gas expands through the pumped pressurized liquid substantially instantaneously increasing the liquid flow rate into the rock formation, and creates rapid cyclical injected liquid surges into the rock formation with liquid oscillation occurring inside the fractures and/or pores of the formation. The method may be used in regular oil production applications, waterflooding of wells that have ceased to be productive, in preventing lost circulation in oil wells, and in injecting hazardous wastes into rock formations. | 04-21-2011 |
