NGK Spark Plug has patented a spark plug design with an insulator, metallic shell, and center electrode. The unique feature includes a step portion on the insulator and a curved surface on the metallic shell for improved engagement. The design aims to enhance spark plug performance. GlobalData’s report on NGK Spark Plug 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 NGK Spark Plug, Ceramic membrane fuel cells was a key innovation area identified from patents. NGK Spark Plug's grant share as of May 2024 was 35%. Grant share is based on the ratio of number of grants to total number of patents.
Spark plug with unique insulator and metallic shell design
A recently granted patent (Publication Number: US12003078B2) discloses a spark plug design comprising an insulator with an axial hole, a metallic shell surrounding the insulator, and a center electrode positioned in the axial hole towards the front end. The insulator features a step portion on its outer surface facing the front end, while the metallic shell has a receiving surface on its inner surface facing the rear end. These components are engaged via a packing, with the step portion having a first curved surface on the outer side and a second curved surface on the inner side. The contact area between the packing and the insulator is strategically located towards the rear end side and the inner circumferential side with respect to the receiving surface.
Furthermore, the patent claim specifies that the first curved surface on the step portion has a larger radius of curvature compared to the second curved surface. This design feature enhances the overall functionality and performance of the spark plug, ensuring efficient operation and longevity. The intricate details of the spark plug structure outlined in the patent highlight the innovative approach taken to optimize its design for improved functionality and durability in various applications.
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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.
