ASAHI ENGINEERING CO., LTD.
18Patents
7Active
18Granted
38Portfolio score
Filing activity: Feb 26, 1981 → Oct 17, 2014 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6068872A | Vacuum-heat processing method | Human Necessities | 20 | Expired |
| US5988051A | Vacuum-heat processing apparatus | Human Necessities | 14 | Expired |
| US4656948A | Water containing explosive cartridge and preparation thereof | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4351252A | Method for treating water solution of waste material containing salt of smelt-water explosion characteristic | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7373760B2 | Floor structure | Fixed Constructions | 9 | Expired |
| US7418804B2 | Floor structure | Fixed Constructions | 7 | Active |
| US6691576B1 | Thickness measuring device for cylindrical tank bottom plate | Physics | 6 | Expired |
| US6637977B2 | Compressed gas storage tank utilizing rock-bed cavity | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7323096B2 | Method for treating the surface of object and apparatus thereof | Electricity | 5 | Expired |
| US6892410B2 | Reinforcement structure of truss bridge or arch bridge | Fixed Constructions | 5 | Expired |
| US7857952B2 | Method for treating the surface of object and apparatus thereof | Electricity | 5 | Active |
| US5354542A | Movable tank type multi-purpose batch production system | Performing Operations; Transporting | 3 | Expired |
| US7469439B2 | Floor slab bridge structure | Fixed Constructions | 2 | Active |
| US6792638B2 | Structure of floor slab bridge | Fixed Constructions | 1 | Expired |
| US8370983B2 | Rigid connection structure of bridge pier and concrete girder | Fixed Constructions | 1 | Active |
| US10767333B2 | Construction method for foundation pile | Fixed Constructions | 1 | Active |
| US10036130B2 | Slab bridge structure | Fixed Constructions | 0 | Active |
| USRE40064E1 | Structure of floor slab bridge | General | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.