Martinrea International. has filed a patent for a capless fuel unit made of plastic components with flapper valves and elastomeric seals. The unit incorporates Graphene or a Graphene-derivative to resist hydrocarbon emissions from fuel vapors escaping into the atmosphere. GlobalData’s report on Martinrea International 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 Martinrea International, H2 storage metal hydrides was a key innovation area identified from patents. Martinrea International's grant share as of January 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.

Capless fuel unit with graphene for hydrocarbon emission resistance

Source: United States Patent and Trademark Office (USPTO). Credit: Martinrea International Inc

The patent application US20230364988A1 discloses a capless fuel unit constructed of plastic components that includes an elongated housing with flapper valves movable between open and closed positions, elastomeric seals, and the incorporation of a Graphene-derivative to resist hydrocarbon emissions from fuel vapors. The apparatus also features pressure relief valves within the flapper valves, an outer body attachable to the housing, and springs urging the flapper valves towards a closed position. The plastic components may include various materials such as thermoplastics, elastomers, and synthetic polymers like polypropylene, nylon, and polyethylene.

Furthermore, the patent application extends to a quick connector device for a fuel system and a combination EVAP carbon canister body and cover, both incorporating Graphene-derivatives to prevent hydrocarbon emissions. The quick connector device includes male and female connectors with elastomeric seals and plastic components with Graphene-derivatives. The EVAP carbon canister body and cover also utilize plastic components with Graphene-derivatives to resist hydrocarbon emissions from fuel vapors. The Graphene-derivatives mentioned in the claims include various forms such as monolayer Graphene, Graphene oxide, and functionalized Graphene, providing a versatile solution for reducing environmental impact.

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