Location History:
- Shiga JP (2007)
- Toyama, JP (1999 - 2016)
- Tokyo, JP (2004 - 2018)
Company Filing History:
7 out of 80 
5 out of 10,264 
5 out of 553 
Years Active: 1999-2018
Title: Yoshiharu Yamamoto: Inventive Mind in Sodium Tungstate Production
Introduction:
In the realm of innovations and patents, Yoshiharu Yamamoto from Toyama, Japan, has made a notable mark with his expertise in sodium tungstate production. With a total of 13 patents to his name, Yamamoto's contributions in this field have garnered attention. This article aims to shed light on his latest patents, career highlights, collaborations, and commendable accomplishments.
Latest Patents:
Yamamoto's recent patents revolve around improving the methods for producing sodium tungstate, collecting tungsten, and developing related apparatus. The patents include the following inventions:
1. Sodium tungstate production method: This patent describes a method of producing sodium tungstate by reacting tungsten-containing cemented carbide scrap with a molten salt containing sodium sulfate. The addition of a metal oxide enhances the process, resulting in efficient sodium tungstate extraction.
2. Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution: This patent encompasses various interconnected inventions. The method for producing sodium tungstate involves the supply of an oxidant (sodium nitrate or sodium nitrite) to react with a tungsten-containing material, continuously producing a reaction product. Additionally, a separate method for collecting tungsten is described, along with an apparatus for producing sodium tungstate. The patent also covers a method of producing a sodium tungstate aqueous solution by dissolving the reaction product in water using a reductant.
Career Highlights:
Throughout his career, Yoshiharu Yamamoto has demonstrated remarkable expertise in the field of sodium tungstate production. He has held positions in renowned companies such as A.L.M.T. Corporation and Sumitomo Electric Industries, Limited. With his wealth of experience, Yamamoto has consistently pushed the boundaries of innovation in this specialized area.
Collaborations:
Yamamoto's professional journey has been enriched by collaborations with like-minded individuals. Notably, he has worked alongside Akihiko Ikegaya and Kazuo Sasaya, who have contributed significantly to the advancements in sodium tungstate production. These collaborations have fostered an environment of knowledge-sharing and propelled the development of innovative solutions.
Conclusion:
Yoshiharu Yamamoto's strong passion for innovation, coupled with his expertise in sodium tungstate production, has led to the creation of multiple impactful patents. His methodical approach, as evident in his patents, has improved the efficiency and effectiveness of sodium tungstate extraction. Through his notable collaborations and career achievements, Yamamoto has left an indelible mark on the advancements in this field. As a dedicated inventor and patent holder, he continues to inspire others and drive innovation in the ever-evolving landscape of sodium tungstate production.