OBAYASHI CORPORATION
46Patents
11Active
46Granted
43Portfolio score
Filing activity: Oct 10, 1990 → Sep 15, 2023 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6058339A | Autonomous guided vehicle guidance device | Physics | 67 | Expired |
| US6070640A | Walk-through type waterproof screen apparatus | Human Necessities | 30 | Expired |
| US5366549A | Method for fabricating fiber-reinforced slag gypsum cement-based, lightweight set articles | Chemistry; Metallurgy | 28 | Expired |
| US5392935A | Control system for cable crane | Fixed Constructions | 23 | Expired |
| US5375944A | Waste disposing ground or facility | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5674313A | Rubber modified asphalt type of water-proofing composition | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5106163A | Method and apparatus for inspecting a forward end portion in a tunneling machine | Physics | 9 | Expired |
| US6095719A | Process for constructing intake pipe | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6139801A | Gas collecting apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6136608A | Method for determining formaldehyde present in air | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6219986A | Method for reinforcing wall structure | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6425157B1 | Elevated bridge infrastructure design method | Fixed Constructions | 6 | Expired |
| US5615978A | Management system for water-barrier sheet | Fixed Constructions | 6 | Expired |
| US6302621A | Segment for intake tunnels | Fixed Constructions | 6 | Expired |
| US6076995A | Segments | Fixed Constructions | 6 | Expired |
| US5317854A | Precast concrete panel for a composite floor | Fixed Constructions | 6 | Expired |
| US5881504A | Temporary frame system for construction | Fixed Constructions | 6 | Expired |
| US6543077B2 | Elevated bridge infrastructure and design method for designing the same | Fixed Constructions | 5 | Expired |
| US5542220A | Hydrostatic anti-vibration system and adjusting method therefor | Fixed Constructions | 5 | Expired |
| US5891224A | Rubber modified asphalt type of water-proofing compositions | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6722088B2 | Elevated bridge infrastructure and design method for designing the same | Fixed Constructions | 4 | Expired |
| US7490439B2 | Double floor structure | Fixed Constructions | 4 | Expired |
| USD894645S1 | Bearer | General | 4 | Active |
| US5511429A | Method and system for measuring three-dimensional displacement | Electricity | 3 | Expired |
| US5243834A | Low temperature food storage equipment | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.