This inventor holds 4 USPTO granted patents. Top assignee: Dowa Mining Co., Ltd.. Active years: 2000-2007.
Company Filing History:
Years Active: 2000-2007
Title: Kenichi Harigae: Innovator in Silver Oxide Technology
Introduction
Kenichi Harigae is a notable inventor based in Honjo, Japan. He has made significant contributions to the field of materials science, particularly in the development of silver oxide powders. With a total of 4 patents to his name, Harigae's work has implications for various applications, including electronics and energy storage.
Latest Patents
One of Harigae's latest patents involves a fine-grain silver oxide powder that serves as a replacement for silver powder in conductive paste fillers. This innovative powder has a specific surface area measured by the BET method ranging from 1.0 to 25.0 m/g, with an average primary particle diameter of 1 to 50 nm and an average secondary particle diameter of 1 to 1000 nm. The production process includes preparing a neutralization medium with an aqueous solution containing sodium hydroxide and/or potassium hydroxide, followed by a controlled neutralization reaction to obtain a precipitate.
Another significant patent focuses on silver oxide for use in cells. In this process, an aqueous sodium carbonate solution is added to an aqueous silver nitrate solution under stirring. The pH is adjusted to between 5.5 and 6.5 using nitric acid and sodium hydroxide, resulting in a silver carbonate precipitate. This precipitate is then thoroughly washed and dried at temperatures below 250 degrees Celsius, yielding a silver oxide powder with excellent characteristics for cell applications, such as high water absorption and low residual carbon content.
Career Highlights
Kenichi Harigae is currently employed at Dowa Mining Co., Ltd., where he continues to innovate in the field of materials science. His work has not only advanced the understanding of silver oxide materials but has also contributed to the development of more efficient and effective products in various industries.
Collaborations
Harigae has collaborated with notable colleagues, including Hidekazu Kato and Shigetoshi Uchino. These partnerships have fostered a collaborative environment that enhances the innovation process and leads to groundbreaking advancements in their field.
Conclusion
Kenichi Harigae's contributions to silver oxide technology exemplify the impact of innovative thinking in materials science. His patents reflect a commitment to advancing technology and improving product performance in various applications.