Toto has patented a washdown flush toilet with a unique water discharge trap conduit design. The system includes ascending and descending flow channels with specific cross-sectional areas and shapes to optimize waste removal. The design aims to improve toilet flushing efficiency and cleanliness. GlobalData’s report on Toto gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Toto, Reformer integrated fuel cells was a key innovation area identified from patents. Toto's grant share as of January 2024 was 23%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for washdown flush toilet design

Source: United States Patent and Trademark Office (USPTO). Credit: Toto Ltd

A washdown flush toilet patent (Publication Number: US11885109B2) has been granted, detailing a unique design for the water discharge trap conduit connected to the bowl part. The design includes an inlet pipe part, a trap ascending pipe part, and a trap descending pipe part, with specific features such as an enlarged part on the downstream side of the ascending flow channel and a shrunk part at the downstream end of the ascending flow channel. The cross-section perpendicular to the flow direction of the ascending flow channel also features convex upward shapes at central regions, with specific curvatures and widening gaps between surfaces of the enlarged part.

Furthermore, the patent includes additional claims such as the formation of the top surface of the enlarged part by a vertical wall surface, the presence of a second enlarged part on the downstream side of the descending flow channel, and the specific sizing of the shrunk part in relation to the adjacent enlarged part. These claims highlight the intricate design elements of the washdown flush toilet, aiming to optimize the flow of waste and water through the system. The unique features described in the patent aim to improve the efficiency and effectiveness of the toilet's flushing mechanism, potentially offering benefits in terms of water conservation and overall performance.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.