KAJIMA Corporation
151Patents
11Active
151Granted
44Portfolio score
Filing activity: Aug 2, 1973 → Sep 9, 2015 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5239798A | External wall panel and mounting structure thereof | Fixed Constructions | 75 | Expired |
| US5444986A | Method of producing ice by using fluorinated pentane | Emerging Cross-Sectional Technologies | 68 | Expired |
| US5379561A | External wall panel and mounting structure thereof | Fixed Constructions | 68 | Expired |
| US5644928A | Air refrigerant ice forming equipment | Mechanical Engineering; Lighting; Heating | 66 | Expired |
| US4047580A | High-velocity jet digging method | Fixed Constructions | 52 | Expired |
| US4699640A | Clean room having partially different degree of cleanliness | Mechanical Engineering; Lighting; Heating | 51 | Expired |
| US4014089A | Method of connecting beams and columns of steel frame construction | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4048776A | Steel column base member | Fixed Constructions | 46 | Expired |
| US7234574B2 | Damping coefficient switching-type hydraulic damper | Fixed Constructions | 46 | Active |
| US5311709A | Variable damping device for seismic response controlled structure | Fixed Constructions | 44 | Expired |
| US4922667A | Device and method for protecting a building against earthquake tremors | Fixed Constructions | 43 | Expired |
| US4883250A | Vibration-proof and earthquake-immue mount system | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5358328A | Mixing device | Performing Operations; Transporting | 36 | Expired |
| US3938297A | Fittings for connecting columns and beams of steel frame construction | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4799339A | Method of controlling building against earthquake | Fixed Constructions | 34 | Expired |
| US5036633A | Variable damping and stiffness structure | Fixed Constructions | 33 | Expired |
| US5347771A | High damping device for seismic response controlled structure | Fixed Constructions | 32 | Expired |
| US5001870A | Method of cutting and disassembling cylindrical structure | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5153563A | Fire sensing system, process for sensing fire and environment monitor | Physics | 30 | Expired |
| US4905326A | Diving pool | Fixed Constructions | 29 | Expired |
| US4084648A | Process for the high-pressure grouting within the earth and apparatus adapted for carrying out same | Fixed Constructions | 28 | Expired |
| US7947245B2 | Method for producing nanocarbon and catalytic reaction device for producing nanocarbon | Emerging Cross-Sectional Technologies | 28 | Active |
| US5065552A | Active seismic response control system for use in structure | Fixed Constructions | 27 | Expired |
| US4854769A | System for paving inclined and/or curved surfaces | Fixed Constructions | 27 | Expired |
| US5410847A | Junction structure between steel member and structural member | Emerging Cross-Sectional Technologies | 26 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.