Company Filing History:
1 out of 11 
1 out of 232 Years Active: 1990-1992
Title: Hirozo Hirayama: Innovator in Underground Pipe Rehabilitation
Introduction
Hirozo Hirayama is a notable inventor based in Koka, Japan. He has made significant contributions to the field of underground pipe rehabilitation, holding a total of 2 patents. His innovative approaches have paved the way for advancements in this essential area of infrastructure maintenance.
Latest Patents
Hirayama's latest patents include a method for rehabilitating underground pipes using an expanding helically wound liner. Additionally, he has developed a method for drilling a branch line aperture after the internal lining of a pipe. These inventions demonstrate his commitment to improving the efficiency and effectiveness of pipe rehabilitation techniques.
Career Highlights
Throughout his career, Hirayama has worked with several prominent companies, including Rib Loc Australia Pty Ltd and Sekisui Kagaku Kogyo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to significant projects in the field.
Collaborations
Hirayama has collaborated with notable individuals such as Minoru Yasuhara and Masahisa Sonku. These partnerships have further enhanced his work and expanded the impact of his inventions.
Conclusion
Hirozo Hirayama's contributions to the field of underground pipe rehabilitation are noteworthy. His innovative patents and collaborations reflect his dedication to advancing technology in this critical area. His work continues to influence the industry and improve infrastructure maintenance practices.