Location History:
- Kanagawa-ken, JP (2002)
- Yokohama, JP (1988 - 2011)
Company Filing History:
22 out of 52,711 
1 out of 265 
Years Active: 1988-2011
Title: Innovations by Tomohisa Arai: A Leader in Alloy Technology
Introduction
Tomohisa Arai, an accomplished inventor based in Yokohama, Japan, has made significant strides in the field of alloy technology. With a remarkable total of 22 patents to his name, Arai has focused on developing materials that exhibit high hardness, corrosion resistance, and wear resistance, which are essential in various industrial applications.
Latest Patents
Arai's latest innovations include a **high hardness, high corrosion resistance, and high wear resistance alloy**. This alloy is specifically characterized as an aging heat-treated Cr-Al-Ni base alloy. It possesses a mixed phase of α phase, γ' phase, and γ phase that precipitates at grain boundaries, which accounts for no less than 95% in terms of area ratio. Arai's invention establishes criteria for the intensity ratio measured by X-ray diffractometry, ensuring that the alloy exhibits excellent corrosion resistance, hardness, wear resistance, and fatigue strength.
Another notable invention by Arai is a **cutter composed of Ni-Cr alloy**. This cutter contains between 32 to 44 mass percent of Cr and 2.3 to 6.0 mass percent of Al, with the balance being nickel, impurities, and trace elements. With a Rockwell C hardness of 52 or more, this cutter is designed for superior workability, significantly simplified production processes, and exceptional long-term cutting performance while maintaining resistance to heat-induced deterioration.
Career Highlights
Throughout his career, Tomohisa Arai has worked with prominent companies, such as Kabushiki Kaisha Toshiba and Toshiba Materials Co., Ltd. His contributions to alloy technology and innovation have established him as a key figure within the engineering community.
Collaborations
Arai has collaborated with talented professionals like Keisuke Hashimoto and Masami Okamura, who have played integral roles in advancing research and development in materials technology alongside him. Their joint efforts have contributed to the successful development of several innovative alloys.
Conclusion
Tomohisa Arai's dedication to innovation in alloy technology exemplifies the impact of inventive minds on industry standards and practices. With his impressive portfolio of patents and ongoing contributions, he continues to inspire future advancements in material science and 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.