This inventor holds 36 USPTO granted patents, plus 1 CIPO patent, primarily in Shield Tunneling Technology. Top assignees: Kabushiki Kaisha Iseki Kaihatsu Koki, Kabushiki Kaisha Aoki Kensetsu, Kabushiki Kaisha Iseki. Active years: 1982-2000.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yono, JP (1982)
- Yano, JP (1982)
- Midori, JP (1992)
- Kanagawa, JP (1991 - 1995)
- Kanagawa-ken, JP (1996 - 1998)
- Yokohama, JP (1983 - 2000)
Company Filing History:

Years Active: 1982-2000
Areas of Expertise:
Title: Innovations of Toshio Akesaka: A Pioneer in Pipe Replacement Technology
Introduction: Toshio Akesaka, based in Yokohama, Japan, is an accomplished inventor with an impressive portfolio of 36 patents. His innovative contributions have significantly advanced the field of pipe replacement technology, showing his dedication to improving existing methods.
Latest Patents: Among his latest inventions is a sophisticated method for replacing existing pipes. This invention features a device designed to facilitate the pipe replacement process, incorporating a drawing device mounted in a drawing shaft and a pipe replacement device strategically arranged. The pipe replacement device consists of a cutting part with multiple cutter bodies, each equipped with various cutting edges that create grooves in cast iron pipes. The ingenious design allows for the splitting of existing pipes into arc-shaped pieces, which are pressed into the ground to form a tunnel, enabling the introduction of new pipes protected by arc-shaped protective armors. This groundbreaking technology not only simplifies the replacement process but also ensures minimal disruption to the surrounding environment.
Career Highlights: Throughout his career, Toshio Akesaka has made significant strides in innovation while working with leading companies in the industry, including Kabushiki Kaisha Iseki Kaihatsu Koki and Toa Grout Kogyo Kabushiki Kaisha. His experience and expertise in pipe replacement technology solidify his reputation as a thought leader in this niche.
Collaborations: Toshio has collaborated with notable colleagues such as Takashi Ogawara and Kazuto Hamada, further enhancing the quality and reach of his innovative work. Their combined expertise has contributed to the successful development of advancements in construction and engineering.
Conclusion: Toshio Akesaka's contributions to pipe replacement technology are noteworthy and demonstrate significant advancements in the engineering field. His innovative designs and methods have revolutionized the way existing pipes are replaced, proving that engineering ingenuity can yield practical solutions to complex challenges. As he continues to innovate, the impact of his work will likely influence future developments in the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile