Nissin Foods has patented a hydrogen production apparatus that grinds silicon chips or scraps to generate hydrogen by dispersing silicon fine particles in water. This innovative method efficiently utilizes waste materials to produce hydrogen, contributing to environmental protection and reducing production costs. GlobalData’s report on Nissin Foods 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 Nissin Foods, Intelligent cooking vessels was a key innovation area identified from patents. Nissin Foods's grant share as of January 2024 was 25%. Grant share is based on the ratio of number of grants to total number of patents.

Hydrogen production from silicon chips and grinding scraps

Source: United States Patent and Trademark Office (USPTO). Credit: Nissin Foods Holdings Co Ltd

A recently granted patent (Publication Number: US11840450B2) discloses a hydrogen production method involving the grinding of silicon chips or scrap to create silicon fine particles. These particles are then treated with hydrofluoric acid or ammonium fluoride solutions to remove surface oxide films and undergo a hydrophilization process. Subsequently, hydrogen is generated by allowing the treated silicon particles to interact with water or an aqueous solution. The method also includes additional steps for further surface oxide film removal and hydrogen generation, enhancing the efficiency of the process.

Furthermore, the patent claims that the hydrogen generation speed and amount can be adjusted by altering the hydrogen ion concentration index (pH) of the water or aqueous solution during the process. Additionally, the surfaces of the silicon fine particles can be treated with surfactants or nitric acid in the hydrophilization step. The method specifies that the silicon particles should have a crystallite diameter of 100 nm or less and recommends using an aqueous solution with a pH value of 10 or more for optimal hydrogen generation. These innovative steps aim to improve the overall efficiency and effectiveness of hydrogen production through the utilization of silicon particles and specific treatment processes.

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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.