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Microcap & Penny Stocks : DCH Technologies (DCH) -- Ignore unavailable to you. Want to Upgrade?

To: John Stichnoth who wrote (2119)	11/1/1999 11:10:00 PM
From: Dan B.	Respond to of 2513

Well, you have a point there, LOL. I just now simply searched by Number from the filing, in the site you provided. Hope this helps. Patent No: 5,514,486 164.195.100.11 and Patent No: 5,595,834: 164.195.100.11 "Inventors: Wilson; Mahlon S. (Los Alamos, NM) Assignee: The Regents of the University of California, Office of Technology (Alameda, CA)"--same for both. The following is from 5,514,486 and I see that the other more recent patent reads only slightly different and mostly verbatim as regards this quote. "The application of a diffusion process for the oxygen supply acts to limit the supply to the active sites, which limits the reaction. The porous flow-field also limits the outward diffusion of the reaction product water, thus minimizing water loss and drying effects on the cell. Since each molecule of oxygen diffusing inward produces two water molecules that diffuse outward at steady-state conditions, it will be appreciated that the cell design allows the influx of sufficient oxygen while limiting the escape of water vapor such that the system maintains the desired high hydration level. In addition, the absence of manifold seals at the periphery of all but the anode flow-fields and separator plates extending beyond the unit cell periphery to function as cooling fins, allow greater conduction of reaction heat to the periphery to enhance cooling. In addition, the diffusion delivery of the reactants allows the performance of the cells to be relatively tolerant of stack orientation. In terms of manufacturing advantages, all of the components of the stack, such as the flow-fields and seals, are radially symmetrical so fabrication and modifications are simple. In addition, this configuration provides a highly efficient utilization of the cross sectional area and smaller and lighter end-plates. Thus, the size of the complete fuel cell stack is less than might be obtained with more conventional designs." Dan B