Seiko Group. has filed a patent for a terminal-equipped button cell with unique features. The design includes flat cylindrical cathode and anode cans, a gasket for insulation, and terminals fixed to the bottom surfaces. The cathode can has a slightly curved bottom surface and the cathode terminal is inclined for secure attachment. GlobalData’s report on Seiko Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Seiko Group, Treatment progress monitoring was a key innovation area identified from patents. Seiko Group's grant share as of January 2024 was 29%. Grant share is based on the ratio of number of grants to total number of patents.
Button cell with curved cathode can and flat cathode terminal
The patent application (Publication Number: US20240039133A1) describes a terminal-equipped button cell with specific structural features. The cell includes a cathode can and an anode can with flat cylindrical shapes, a gasket for insulation and sealing, and cathode and anode terminals fixed to the bottom surfaces of the respective cans. The cathode can's bottom surface is curved convexly outward by 100 µm or less, integrated with the anode can. The cathode terminal has a flat connecting part fixed along the radial direction of the cathode can's bottom surface, inclined to form a tangent line at a position other than the center.
Furthermore, the patent details the welding of the cathode terminal to the cathode can at multiple welded points, with a specific thickness range for the cathode terminal. The cathode terminal's structure includes a connecting part, an intermediate part, and a substrate connecting part. The substrate connecting part is inclined concerning the substrate's connection surface. Additionally, the cell may include a substrate connecting part connected to the anode can, extending almost flush with the cathode terminal's substrate connecting part. These structural elements and configurations aim to enhance the performance and reliability of the terminal-equipped button cell, as outlined in the patent claims.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
