Location History:
- Sumoto, JP (1989)
- Itano-gun, JP (1997)
- Hiroshima, JP (1997)
- Tokushima, JP (2000 - 2003)
Company Filing History:
11 out of 8,782 
1 out of 832,880 Years Active: 1989-2003
Title: Takeo Hamamatsu: Innovator in Battery Technology
Introduction
Takeo Hamamatsu is a prominent inventor based in Tokushima, Japan. He has made significant contributions to the field of battery technology, holding a total of 12 patents. His innovative designs focus on improving the efficiency and performance of alkaline storage batteries.
Latest Patents
One of his latest patents is a rectangular alkaline storage battery. This design features an electrode plate that is easy to prepare and boasts a high packing density of active material along with a high volumetric energy density. The negative electrode plate, made from hydrogen-absorbing alloy, is bent into a U-shape at the central portion, allowing for a composite positive electrode plate to be sandwiched between the hydrogen-absorbing alloy negative electrode plates. A separator made of unwoven polypropylene fabric is interposed to create an electrode plate unit. Two such units are laminated to form a group of electrode plates.
Another notable patent involves a non-sintered nickel electrode with excellent over-discharge characteristics. This alkaline storage cell includes a non-sintered type nickel electrode that contains a highly efficient nickel hydroxide active material, which does not experience capacity decrease during over-discharge operations. The nickel electrode is composed of nickel hydroxide, a solid solution of zinc, cadmium, magnesium, and calcium, along with cobalt compound layers formed over the surfaces of the nickel hydroxide particles. These cobalt compound layers have an oxidation number greater than 2 and a disordered crystal structure.
Career Highlights
Throughout his career, Takeo Hamamatsu has worked with notable companies, including Sanyo Electric Co., Ltd. His work has significantly impacted the development of advanced battery technologies.
Collaborations
He has collaborated with several talented individuals in the field, including Akifumi Yamawaki and Yoshitaka Baba. Their combined expertise has contributed to the success of various projects and innovations.
Conclusion
Takeo Hamamatsu is a distinguished inventor whose work in battery technology continues to influence the industry. His innovative patents and collaborations highlight his commitment to advancing energy storage solutions.