ENEOS has been granted a patent for a method to diagnose flowmeter failures in measuring machines used for hydrogen gas tanks. The method involves calculating filling amounts based on pressure, temperature, and tank volume, comparing with past data, and outputting results. GlobalData’s report on ENEOS gives a 360-degree view of the company including its patenting strategy. Buy the report here.

Smarter leaders trust GlobalData


Premium Insights ENEOS Holdings Inc - Company Profile

Buy the Report

Premium Insights

The gold standard of business intelligence.

Find out more

According to GlobalData’s company profile on ENEOS, Hydrocarbon redistribution reaction catalysts was a key innovation area identified from patents. ENEOS's grant share as of February 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.

Method for diagnosing flowmeter failure in hydrogen gas tank

Source: United States Patent and Trademark Office (USPTO). Credit: ENEOS Holdings Inc

A recently granted patent (Publication Number: US11920733B2) outlines a method for diagnosing a failure of a flowmeter in a measuring machine used during the filling of a vehicle tank with hydrogen gas. The method involves measuring the filling amount of hydrogen gas using the flowmeter, receiving tank information such as pressure, temperature, and volume, calculating the filling amount at the end of filling based on this data, and determining the flowmeter's failure by comparing measured and calculated filling amounts. The determination is made using error values derived from past performance data stored in a storage device, ensuring accurate diagnosis of flowmeter failures.

Furthermore, the patent describes a hydrogen filling device that incorporates the method for diagnosing flowmeter failures. The device includes components such as a measuring machine, reception circuit, filling amount calculation circuit, storage device for error values, determination circuit, and output circuit for indicating flowmeter failure. By utilizing differential values or error rates based on past performance data, the device can effectively determine flowmeter failures during the hydrogen gas filling process. The use of a Coriolis-type flowmeter enhances the accuracy and reliability of the diagnostic process, ensuring efficient operation and maintenance of hydrogen filling equipment.

To know more about GlobalData’s detailed insights on ENEOS, buy the report here.

Premium Insights


The gold standard of business intelligence.

Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.


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

GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. 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.