Location History:
- Kobe, JP (1993)
- Hyogo, JP (2008)
Company Filing History:
1 out of 23 
1 out of 18 
1 out of 148 
Years Active: 1993-2008
Title: Masaru Yamakawa: Innovator in Underground Construction Technology
Introduction
Masaru Yamakawa is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of construction technology, particularly in the development of methods for underground communication systems. With a total of 2 patents, Yamakawa's work focuses on enhancing the efficiency and functionality of underground pipelines.
Latest Patents
Yamakawa's latest patents include a "Method of constructing information correspondence pipe, constructed structure, and construction member." This innovative method aims to provide a construction technique for an information-communicable underground pipe. The design allows for communication cables to be easily laid within an underground pipeline that consists of a main pipe and branched pipes. The construction method involves inserting a sheath pipe into the underground pipeline through a manhole. The sheath pipe is designed with a main body that contains an empty room for installing communication cables, along with a high-strength low-elongation material element that is secured to the inner wall of the manhole.
Another patent is a "Boring device for lining material in branched portions of lined conduit." This invention further enhances the capabilities of underground construction, ensuring that communication systems can be effectively integrated into existing infrastructure.
Career Highlights
Throughout his career, Masaru Yamakawa has worked with several prominent companies, including Ashimori Kogyo and Sanki Engineering Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the construction sector.
Collaborations
Yamakawa has collaborated with notable colleagues such as Isaburo Yagi and Hideo Maruyama. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.
Conclusion
Masaru Yamakawa's contributions to underground construction technology demonstrate his commitment to innovation and efficiency. His patents reflect a deep understanding of the challenges in the industry and provide practical solutions for modern construction needs.