Suzuki Motor Corporation will allow royalty-free use of 34 patents related to its outboard motor microplastic collecting device, including pre-grant phase applications. This marks the first time in the company’s history that it is waiving licence fees for its own technology.
Through this decision, Suzuki says it hopes to further accelerate efforts to improve the marine environment in collaboration with companies and organisations that share the same commitment.
Microplastic collecting outboard engines
Suzuki developed the world’s first microplastic collecting device that can be installed on outboard motors and began production of outboard motors equipped with this device as standard equipment on select models in July 2022. By installing this device on outboard motors, microplastics near the water surface can be collected just by running the boat, without affecting engine performance (see patent details and diagram below).
Plastic waste entering the world’s oceans has become a major global environmental concern. Over time, the plastic waste breaks down into microplastics, which pose serious risks to marine ecosystems, particularly when ingested by ocean life.
Since obtaining its first patent related to its microplastic collecting device in November 2021, Suzuki has acquired various patents in major markets for outboard motors. The outboard motor microplastic collecting device is currently standard on five Suzuki models as standard (DF140BG, DF115BG, DF140B, DF115B, and DF100C).
As these initiatives have progressed, Suzuki has determined that extending the use of microplastic collecting devices will further support the protection of marine habitats. Based on this determination, Suzuki has decided to make these patents available on a royalty‑free basis. It is hoped the decision will contribute to the realisation of a sustainable society.
Suzuki’s microplastic collecting patents
The patent portfolio focuses on the engine‑cooling system of outboard motors that pump up seawater while running and enables the collection and removal of microplastics by installing a microplastic collecting device in the cooling‑water passage after the engine has been cooled, maintaining the existing cooling function without compromise.
The portfolio also includes improvement patents that arrange a parallel bypass channel to divert flow when the device’s filter becomes clogged in order to prevent a decline in cooling performance, and suppress the occurrence in which, under specific operating conditions, backflow of cooling water within the passage forces collected materials upstream, leading to microplastics flow through the bypass passage and to be discharged back into the ocean.
Suzuki is continuing efforts to protect the world’s marine environments through programmes including the ‘Suzuki Clean Ocean Project, working together with companies and organisations globally to contribute to the creation of a cleaner and more sustainable future for the oceans.
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