This inventor holds 4 USPTO granted patents. Top assignees: Takemoto Yushi Kabushiki Kaisha, Takenaka Corporation. Active years: 1990-1995.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
4 out of 127 
1 out of 61 Years Active: 1990-1995
Title: Tsuneo Yamamoto: Innovator in Hydraulic Cement Compositions
Introduction
Tsuneo Yamamoto is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of hydraulic cement compositions, holding a total of 4 patents. His work focuses on enhancing the properties of cement to improve construction materials.
Latest Patents
One of his latest patents involves ultra high-strength hydraulic cement compositions. This innovation features an extremely low water-to-cement ratio of 10-30%, which allows for high fluidity and improved capability of preventing slump loss. The resulting high-quality ultra high-strength hardened concrete and mortar exhibit superior workability. The composition includes a binder made of cement or a mixture of cement and a microscopic powder admixture, aggregates, water, and a cement dispersion agent. The binder's unit content ranges from 400-1300 kg/m³, with a water-to-binder ratio of 10-30% and a cement dispersion agent content of 0.1-2.0 weight parts for every 100 weight parts of the binder.
Another significant patent pertains to cement dispersion agents. These agents contain a graft copolymer composed of four kinds of constituent units, each with a specified structure. This innovation provides improved fluidity to cementing compositions, prevents slump loss after the kneading process, and reduces the drying shrinkage of the hardened concrete produced.
Career Highlights
Throughout his career, Tsuneo Yamamoto has worked with prominent companies such as Takemoto Yushi Kabushiki Kaisha and Takenaka Corporation. His experience in these organizations has contributed to his expertise in the field of hydraulic cement.
Collaborations
He has collaborated with notable coworkers, including Mitsuo Kinoshita and Toshihide Shimono. Their joint efforts have further advanced the innovations in cement technology.
Conclusion
Tsuneo Yamamoto's contributions to hydraulic cement compositions have significantly impacted the construction industry. His innovative patents demonstrate a commitment to improving material properties for better performance in construction applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile