This inventor holds 2 USPTO granted patents. Top assignees: Sato Kogyo Kabushiki Kaisha, Yamaguchi Kikai Kogyo Kabushiki Kaisha. Active years: 1979-1981.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Musashi-Murayama, JP (1979)
- Murayama, JP (1981)
Company Filing History:
2 out of 3 
1 out of 1 Years Active: 1979-1981
Title: Seizo Kubota: Innovator in Grout Injection Methods
Introduction
Seizo Kubota is a notable inventor based in Murayama, Japan. He has made significant contributions to the field of construction and soil engineering through his innovative methods of injecting grout and backfilling materials. With a total of 2 patents to his name, Kubota's work has advanced techniques in soil stabilization and shield-forming processes.
Latest Patents
Kubota's latest patents include a method of injecting grout into soil and a method of injecting a backfilling injection material in a shield. The first patent describes a technique that utilizes a combined injection and boring rod. This rod features a tip and at least one injection nozzle at its lowermost end. A sleeve packer made of elastomeric material is embedded in a recess along the rod's length. The method involves inflating the sleeve packer, feeding two liquids of curable grout through respective passages, mixing them at the rod's tip, and injecting the mixed grout into the soil. The rod can also bore a hole to a predetermined depth before injecting the grout.
The second patent outlines a novel method for injecting backfilling material during a shield-forming process. This method employs a screw-type injection pump connected to a hopper. The pump is rotated in reverse to intake the backfilling material and then in the normal direction to inject it at the desired location. After the injection is complete, the pump can be reversed again to intake water for cleaning purposes.
Career Highlights
Throughout his career, Seizo Kubota has worked with reputable companies such as Sato Kogyo and Yamaguchi Kikai Kogyo. His experience in these organizations has allowed him to refine his skills and contribute to various projects in the construction industry.
Collaborations
Kubota has collaborated with notable coworkers, including Taihei Ogawa and Mineo Murata. Their combined expertise has likely enhanced the development and implementation of innovative techniques in their respective fields.
Conclusion
Seizo Kubota's contributions to grout injection methods and backfilling techniques have made a significant impact on the construction industry. His innovative approaches continue to influence practices in soil engineering and stabilization.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile