This inventor holds 25 USPTO granted patents and 5 published patent applications, plus 20 CIPO patents and 18 EPO patents, primarily in Stainless Steel Alloys. Top assignees: Nippon Steel Sumitomo Metal Corporation, Sumitomo Metal Industries, Inc., Nippon Steel Corporation. Active years: 2000-2021.
Location History:
- Osaka, JP (2015)
- Kyoto, JP (2000 - 2016)
- Tokyo, JP (2017 - 2021)
Company Filing History:
13 out of 1,102 
11 out of 929 
1 out of 3,711 Years Active: 2000-2021
Areas of Expertise:
Title: Hisashi Amaya: Innovator in Stainless Steel Technology
Introduction
Hisashi Amaya, a prolific inventor based in Kyoto, Japan, has made significant contributions to the field of metallurgy and materials engineering. With an impressive portfolio of 25 patents, Amaya has focused primarily on developing advanced steel alloys tailored for demanding environments. His innovations are characterized by their exceptional resistance to stress corrosion cracking (SCC) and stress scission cracking (SSC), addressing critical needs in various industrial applications.
Latest Patents
Among his most recent creations are two patents that showcase his expertise in downhole materials. The first patent pertains to a steel bar designed for downhole members, which exhibits excellent resistance to SCC and SSC. The chemical composition of this martensitic stainless steel bar includes specific percentages of carbon, silicon, manganese, phosphorus, sulfur, copper, chromium, nickel, molybdenum, titanium, vanadium, niobium, aluminum, and nitrogen, ensuring robust performance in challenging conditions.
His second patent introduces duplex stainless steel known for its high strength and outstanding performance in high-temperature chloride environments. This duplex stainless steel composition is meticulously engineered to suppress the precipitation of detrimental phases while also meeting stringent criteria laid out in specialized formulas.
Career Highlights
Amaya has garnered experience through his work at notable companies in the steel industry, including Nippon Steel & Sumitomo Metal Corporation and Sumitomo Metal Industries, Inc. His tenure at these esteemed organizations has allowed him to refine his craft and bring innovative steel solutions to the market.
Collaborations
Throughout his career, Amaya has collaborated with esteemed colleagues like Kunio Kondo and Hideki Takabe. These partnerships have fostered a creative environment conducive to technological advancements in steel production.
Conclusion
Hisashi Amaya stands out as a leading inventor whose work has effectively addressed complex challenges in materials engineering. Through his patents, he has not only advanced the capabilities of steel bars and alloys but also contributed to the future of industrial applications in environments where durability and resistance are paramount. His commitment to innovation continues to drive advancements in the field.