Key Foundry Assigned Patent

Key Foundry Co., Ltd., Cheongju-si, Korea, has been assigned a patent (11696440) developed by Cho, Min Kuck, Cheongju-si, Korea, and Lee, Seung Hoon, Busan, Korea, for a “nonvolatile memory device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A nonvolatile memory device includes a cell array formed on a substrate, and a control gate pickup structure, wherein the cell array comprises floating gates, and a control gate surrounding the floating gates, wherein the control gate pickup structure comprises a floating gate polysilicon layer, a control gate polysilicon layer surrounding the floating gate polysilicon layer and connected to the control gate, and at least one contact plug formed on the control gate polysilicon layer.”

The patent application was filed on 2022-04-25 (17/728290).