ALEXANDRIA, Va., Nov. 28 -- United States Patent no. 8,318,356, issued on Nov. 27, was assigned to Corning Inc. (Corning, N.Y.).
"Activated Carbon Materials for High Energy Density Ultracapacitors" was invented by Kishor Purushottam Gadkaree (Big Flats, N.Y.) and Joseph Frank Mach (Lindley, N.Y.). According to the abstract released by the U.S. Patent & Trademark Office: "An activated carbon material derived, for example, by carbonizing and activating a non-lignocellulosic carbon precursor has a structural order ratio less than or equal to 0.08, and a nitrogen content greater than 0.2 wt. %. The activated carbon material can also have a volumetric capacitance greater than or equal to 70 F/cm3, an area-specific resistance less than or equal to 0.1 ohm-cm2 and/or a specific surface area greater than 300 m2/g, and is suitable to form improved carbon-based electrodes for use in high energy density devices." The patent was filed on Dec. 15, 2008, under Application No. 12/335,044.

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