Below is a list of our patents. You can find detailed information on these patents via the Japan Platform for Patent Information shown below.
Japan Platform for Patent InformationAs of June 1, 2022
| Current Status | Registration No. | Title | Applicant |
|---|---|---|---|
| Patent registered | 4518546 | CARTRIDGE TYPE WEEP HOLES | Joint application |
| Patent registered | 4652009 | STRUCTURE (MEASURE FOR SEISMIC ISOLATION OF ELASTIC JOINTS) | Joint application |
| Patent registered | 4918220 | BRIDGE MAINTENANCE AND MANAGEMENT PLANNING SUPPORT SYSTEM | Joint application |
| Patent registered | 5000165 | VORTEX FLOW TYPE WATER PIPE AND METHOD OF DESIGNING THE SAME | Independent application |
| Patent registered | 5439247 | STRUCTURE FOR PREVENTING LOW-FREQUENCY NOISE OF WEIR | Joint application |
| Patent registered | 5687129 | DOUBLE PIPE TYPE WEEP HOLES FOR EXISTING STRUCTURES | Joint application |
| Patent registered | 5606414 | SURVEYING INSTRUMENT FOR MEASURING PORE WATER PRESSURE | Joint application |
| Patent registered | 6068224 | OXYGEN-DISSOLVED WATER SUPPLY SYSTEM FOR WATER AREAS TARGETED FOR WATER ENVIRONMENT IMPROVEMENT | Joint application |
| Patent registered | 6372949 | WATER PERCOLATION AND FILTERING DEVICE, RETAINING WALL EQUIPPED WITH WATER PERCOLATION AND FILTERING DEVICE, AND METHOD FOR INSERTING WATER PERCOLATION AND FILTERING DEVICE | Joint application |
| Patent registered | 6767132 | DEVICE FOR STABILIZING POSITION OF SUSPENDED OBJECT | Joint application |
| Patent registered | 7004889 | ROTARY PRESS-IN DRAINPIPE DEVICE | Joint application |
| Patent registered | 6614623 | DEVICE, METHOD, PROGRAM, AND SYSTEM FOR DETECTING UNIDENTIFIED WATER | Joint application |
| Patent registered | International registration (Australia) | DEVICE, METHOD, PROGRAM, AND SYSTEM FOR DETECTING UNIDENTIFIED WATER | Independent application |
| Patent pending | ― | FLOOD SPILLWAY DEVICE FOR DAM | Joint application |
| Patent pending | ― | SOUND INSULATION WALL DESIGN METHOD AND MANUFACTURING METHOD | Independent application |
| Patent pending | ― | DEVICE, METHOD, AND PROGRAM FOR FLOODING SIMULATION | Independent application |