Location History:
- Onga-gun, JP (2019 - 2020)
- Tokyo, JP (2012 - 2023)
Company Filing History:
11 out of 1,101 
9 out of 3,542 Years Active: 2012-2023
Title: Innovations in Sn-Based Steel Sheets by Hirokazu Yokoya
Introduction
Hirokazu Yokoya is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of materials engineering. With an impressive portfolio of 20 patents, Yokoya has focused on developing advanced steel products that provide enhanced resistance to corrosion and other environmental factors.
Latest Patents
Among his latest patents are innovative designs for Sn-based plated steel sheets. One notable invention is a Sn-based plated steel sheet designed to exhibit superior corrosion resistance, yellowing resistance, coating film adhesiveness, and sulfide stain resistance, all without the use of a chromate film. This invention features a steel sheet complemented by a Sn-based plating layer and a coating layer. The Sn-based plating layer contains between 1.0 g/m² to 15.0 g/m² of Sn per side, while the coating layer includes zirconium oxide, ensuring optimum protection and durability.
Another significant patent is the Sn-plated steel sheet, which incorporates a Sn plating layer formed on at least one side of the steel sheet. This layer contains metal Sn in quantities ranging from 0.1 g/m² to 15 g/m². Additionally, the coating layer includes both zirconium oxide and tin oxide, enhancing the overall performance of the material.
Career Highlights
Hirokazu Yokoya has built his career at leading companies in the steel industry, including Nippon Steel & Sumitomo Metal Corporation and Nippon Steel Corporation. His work in these prominent firms has provided him with a platform to research and innovate, ultimately leading to his numerous patents in the field of steel product development.
Collaborations
During his career, Yokoya has collaborated with distinguished colleagues such as Shigeru Hirano and Akira Tachiki. These partnerships have played a crucial role in advancing his research and innovative endeavors, blending expertise and knowledge in creating high-performance materials.
Conclusion
Hirokazu Yokoya’s contributions to the field of materials science, especially through his developments in Sn-based plated steel sheets, showcase his commitment to innovation. His patents not only reflect his technical acumen but also his dedication to creating products that meet the modern demands of corrosion resistance and environmental sustainability. As he continues to innovate, Yokoya remains an influential figure in the realm of materials engineering.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.