Location History:
- Osaka, JP (1992)
- Sakai, JP (1992 - 2006)
Company Filing History:
8 out of 1,623 
1 out of 17 
1 out of 832,843 Years Active: 1992-2006
Title: Inventor Spotlight: Tadashi Hamada
Introduction
Tadashi Hamada is a prominent inventor based in Sakai, Japan, recognized for his innovative contributions to the field of personal grooming technology. With a total of nine patents to his name, Hamada's work has significantly impacted the design and functionality of shaving devices, enhancing user experience and safety.
Latest Patents
Hamada's latest patents include a cutting-edge razor blade designed to provide improved safety and reduced cutting resistance for users. This innovative razor blade utilizes a thin silicon sheet, either from single crystal silicon materials, like Si wafers, or polycrystalline silicon featuring relatively large silicon crystal grains. By employing chemical etching to create openings in the silicon sheet and utilizing ion beam etching to form a precisely shaped cutting edge, Hamada has achieved a razor blade with a nose radius of 0.5 µm or less, greatly enhancing performance compared to conventional models.
Another notable invention is the electric razor inner blade unit, which consists of multiple blades arranged in parallel, supported by a base. This innovative design allows the blades to engage efficiently with an outer cutter, effectively cutting hair without bending it. The unique rake face of the blades is inclined at a specific angle, resulting in reduced cutting resistance and enabling a cleaner shave with fewer strokes.
Career Highlights
Throughout his career, Tadashi Hamada has made significant advancements in razor technology while working with esteemed companies, including Matsushita Electric Works, Ltd. His engineering expertise has led to numerous improvements in shaving devices, establishing him as a leading figure in personal grooming innovation.
Collaborations
Hamada has collaborated with talented individuals such as Shuji Yamada and Shigetoshi Sakon, who shared his dedication to pushing the boundaries of technology. Together, they have contributed to the development of advanced shaving tools that prioritize user safety and comfort.
Conclusion
Tadashi Hamada's inventive spirit and commitment to enhancing personal grooming technology have led to numerous patents and innovations. His latest designs in razor blade technology and electric shavers underscore his significant contributions to the industry, ensuring that everyday grooming becomes a safer and more efficient experience for users around the world.