Company Information
Patented Technology
Our patented technologies are as follows.
More details are available on the “Japan Platform for Patent Information.”
| Registration No. | Title of Invention | Registration Date |
|---|---|---|
| Patent No. 7488520 | Sludge fertilizer with high nitrogen mineralization rate | May 14, 2024 |
| Patent No. 7455011 | Force-feed pipeline structure, a design method for the force-feed pipeline structure, and a force-feed pipeline inspection method | March 14, 2024 |
| Patent No. 7431391 | Method for predicting degradation of a manhole pump | February 6, 2024 |
| Patent No. 7431390 | Method for determining an abnormality of a manhole pump | February 6, 2024 |
| Patent No. 7186757 | Supernatant Water Drainage Apparatus and Supernatant Water Drainage Method | December 1, 2022 |
| Patent No. 7144497 | Supernatant Water Drainage Apparatus and Supernatant Water Drainage Method | September 20, 2022 |
| Patent No. 7138129 | Sterilization Apparatus and Method for Suppressing Scum Formation Using the Same | September 7, 2022 |
| Patent No. 7097348 | Sterilization Apparatus and Method for Suppressing Scum Formation Using the Same | June 29, 2022 |
| Patent No. 7019010 | Inspection Device for Duct Inner Wall, and Computer Program | February 3, 2022 |
| Patent No. 6937800 | Floating Device for In-Pipe Investigation, In-Pipe Investigation Method, and In-Pipe Investigation System | September 2, 2021 |
| Patent No. 6867638 | Sewerage Monitoring System and Sewerage Monitoring Program | April 13, 2021 |
| Patent No. 6829585 | Sewage Treatment System and Sewage Treatment Method | January 26, 2021 |
| Patent No. 6783303 | Inspection Device for Duct Inner Wall | October 23, 2020 |
| Patent No. 6682021 | Road-Subsidence Risk-Level Evaluation Device, Road-Subsidence Risk-Level Evaluation Method, and Computer Program for Road-Subsidence Risk-Level Evaluation | March 26, 2020 |
| Patent No. 6639423 | Behavior Investigation Device and Behavior Investigation Method for Extending/Contracting Flexible Pipe Joint | January 7, 2020 |
| Patent No. 6626156 | Maintenance Apparatus for Water Supply Pond-Like Structure, Method for Maintaining Water Supply Pond-Like Structure, and Computer Program | December 6, 2019 |
| Patent No. 6619842 | Waste Separation System | November 22, 2019 |
| Patent No. 6543214 | Motion Monitoring Device | June 21, 2019 |
| Patent No. 6345754 | Waste Separation System | June 1, 2018 |
| Patent No. 6321866 | Incinerator Blockage Prevention Method, Incinerator Blockage Prevention Agent Additive Amount Calculation Device, and Incinerator Blockage Prevention Agent Additive Amount Calculation Program | April 13, 2018 |
| Patent No. 5974335 | Incinerator Blockage Prevention Method | July 29, 2016 |
| Patent No. 5881260 | Incinerator Blockage Risk Evaluation Method and Incinerator Blockage Prevention Method | February 12, 2016 |
| Patent No. 5223079 | Method for Strengthening Surrounding Ground of Existing Small-Scale Permanent Underground Structure | March 22, 2013 |
| Patent No. 5196633 | Seismic Isolation Joint | February 15, 2013 |
| Patent No. 4980478 | Infiltration Water Inflow Location Identifying Device | April 27, 2012 |
| Patent No. 4885605 | Earthquake Resistant Structure Manhole Using Low Strength Artificial Lightweight Filter Materials and Guide Route Elements | December 16, 2011 |
| Patent No. 4764084 | Seismic Reinforcement Method for Existing Manholes | June 17, 2011 |