This inventor holds 2 USPTO granted patents. Top assignees: The Zenitaka Corporation, Sekisui Kagaku Kogyo K.k., Sekisui Kagaku Kogyo Kabushiki Kaisha. Active years: 1997-1998.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 2 
1 out of 5 
1 out of 232 Years Active: 1997-1998
Title: Yoshitugu Oshima: Inventor of Improved Sludge Treatment Tank Construction
Introduction
Yoshitugu Oshima is an inventor based in Tokyo, Japan. His work includes inventions for constructing sludge treatment tanks, and he is credited with 2 patents.
Latest Patents
Oshima’s listed patents, “Sludge treatment tank thereof construction method thereof” and “Sludge treatment tank and construction method thereof,” describe using glass long-fiber reinforced foamed plastic composite members as formworks during construction and leaving them in place as interior wall members. The material serves as formwork while providing insulation and corrosion resistance. The approach is intended to reduce on-site labor, improve working conditions, and shorten construction time.
Career Highlights
Oshima’s associated companies include The Zenitaka Corporation and Sekisui Kagaku Kogyo Kabushiki Kaisha. His patent work reflects an application of composite materials to practical construction challenges in sludge treatment facilities.
Collaborations
His listed coworkers include Keitaro Aoyagi and Hideo Iwai.
Conclusion
Yoshitugu Oshima’s patents focus on using durable, insulating composite materials to make sludge treatment tank construction more efficient and improve the performance of the finished structures.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile