Location History:
- Hikari, JP (1995 - 2019)
- Tokyo, JP (2012 - 2024)
Company Filing History:
13 out of 66 
8 out of 3,542 
3 out of 493 Years Active: 1995-2024
Title: Eiichiro Ishimaru: Innovator in Ferritic Stainless Steel
Introduction
Eiichiro Ishimaru is a prominent inventor hailing from Hikari, Japan, with an impressive portfolio of 21 patents to his name. His work primarily focuses on the development of ferritic stainless steel, a material known for its corrosion resistance and strength. Ishimaru's innovations are significant in various industrial applications, particularly for durable consumer goods.
Latest Patents
Two of Ishimaru's latest patents highlight his expertise in stainless steel technology. The first patent pertains to a ferritic stainless steel sheet that exhibits a minimal increase in strength after undergoing aging heat treatment. This steel sheet is characterized by specific compositions, including a maximum of 0.020% carbon, between 10.0% to 25.0% chromium, and several other alloying elements to meet a critical equation for stress values after treatment.
The second patent revolves around a Cr-containing ferritic stainless steel sheet aimed at enhancing corrosion resistance and ridging resistance. This innovation utilizes a unique relationship between the γ-phase rate and tin content to achieve a dual-phase structure during hot rolling processes, ensuring that the resulting material is suitable for general consumer durable goods while providing excellent mechanical properties.
Career Highlights
Throughout his career, Ishimaru has made significant contributions to the field of material science while working with leading companies such as Nippon Steel & Sumikin Stainless Steel Corporation and Nippon Steel Corporation. His expertise in developing high-performance materials has established him as a key figure in the advancement of stainless steel technology.
Collaborations
Ishimaru's work has been bolstered through collaborations with esteemed colleagues, including Masaharu Hatano and Akihiko Takahashi. Together, they have advanced research and development in the field, fostering innovation that addresses the evolving demands for high-quality stainless steel products.
Conclusion
Eiichiro Ishimaru continues to be a pivotal player in the invention and innovation landscape of ferritic stainless steel. His patents reflect a deep understanding of materials science, contributing to advancements that meet both industry standards and consumer expectations. His legacy is highlighted by a dedication to excellence and collaboration within the field.
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.