Location History:
- Yokohama, JA (1976 - 1977)
- Yokohama, JP (1978 - 1980)
Company Filing History:
4 out of 101 
1 out of 50 
1 out of 2 Years Active: 1976-1980
Title: Hajime Kato: Innovating in Molding Sand Technology
Introduction
Hajime Kato, an accomplished inventor based in Yokohama, Japan, has made significant contributions to the field of molding sand technology. With a total of four patents, his work focuses on developing self-hardening materials that surpass traditional molding sand in both performance and efficiency.
Latest Patents
Kato's latest innovations include:
1. **Self-hardening mold sand**: This patent details a self-hardening mold sand featuring exceptional surface stability and high compressive strength, all while using a comparatively small amount of water. The mold sand is created by combining a self-hardening binder formulated from clinker powder, alongside a sulfate, and includes a binder additive of a surface active agent primarily comprising β-naphthalene-sulphonic acid formaldehyde condensate salt. This mixture is subsequently combined with sand, water, and optionally a retarder made from organic carboxylic acid or boric acid.
2. **Molding sand mixtures**: Kato's second innovation centers around mixtures of molding sand that include a combination of molding sand with a rapid hardening cement featuring calcium aluminate as amorphous glass and/or crystals, along with a water holding agent made from polymers and lime. This patent also describes the process of mixing these ingredients, excluding water, and then kneading the mixture before adding water.
Career Highlights
Throughout his career, Kato has been associated with notable companies like Onoda Cement Co., Ltd. and Japanese National Railways. His extensive experience in these organizations has undoubtedly influenced his innovative endeavors in the molding sand sector.
Collaborations
Kato's journey in innovation has been complemented by collaboration with esteemed colleagues such as Hiroshi Uchikawa and Yutaka Harada. Working together, they have pushed the boundaries of what is possible in the molding industry.
Conclusion
Hajime Kato's patents stand as a testament to his ingenuity and dedication to enhancing molding sand technology. His work not only improves manufacturing processes but also paves the way for future innovations in the industry.