Location History:
- Yukuhashi, JP (1995)
- Fukuoka, JP (1988 - 2013)
- Kitakyushu, JP (2011 - 2018)
Company Filing History:
9 out of 1,100 
1 out of 17 
1 out of 66 Years Active: 1988-2018
Title: The Innovative Mind of Yoichi Yamamoto
Introduction
Yoichi Yamamoto, an esteemed inventor based in Fukuoka, Japan, has made significant contributions to the field of material science and elevator control systems. With a remarkable portfolio of 11 patents, he continues to push the boundaries of innovation.
Latest Patents
Among his latest patents, Yoichi has developed an alloying element-saving hot rolled duplex stainless steel material. This material is characterized by its specific composition including C: 0.03% or less, Si: 0.05% to 1.0%, Mn: 0.5% to 7.0%, P: 0.05% or less, S: 0.010% or less, Ni: 0.1% to 5.0%, Cr: 18.0% to 25.0%, N: 0.05% to 0.30%, and Al: 0.001% to 0.05%. The remaining content consists of iron and inevitable impurities. This innovative steel is produced by hot rolling, emphasizing a chromium nitride precipitation temperature of 960°C or lower, yielding increased strength without the need for solution heat treatment. Additionally, he has patented a clad steel plate that utilizes duplex stainless steel as its cladding material, further highlighting his expertise in composite materials. Furthermore, his patent for an elevator control device showcases his depth in electrical engineering, employing a vector controller along with a carrier frequency switch circuit designed to optimize the control of AC motors in elevators, ensuring efficiency and safety.
Career Highlights
Throughout his esteemed career, Yoichi has worked with notable companies such as Yaskawa Electric Corporation and its subsidiary, Yaskawa Denki. His contributions have been vital in pushing the iterative design of elevator technology and advancing steel materials that are more sustainable and durable.
Collaborations
Yoichi has collaborated with other prominent figures in the industry, including his coworkers Hideaki Iura and Kazuhiro Nonaka. These partnerships have facilitated shared knowledge and fostered innovation across various engineering disciplines.
Conclusion
In summary, Yoichi Yamamoto's inventive spirit and commitment to innovation have led to significant advancements in material science and elevator technology. His wealth of patents reflects a rich career dedicated to enhancing product efficiency and sustainability. As he continues to innovate, the impact of his work is sure to be felt across multiple industries for years to come.
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.