CNK CO., LTD.
6Patents
4Active
6Granted
36Portfolio score
Filing activity: Dec 24, 1996 → Oct 29, 2013
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9393571B2 | Coolant system | Emerging Cross-Sectional Technologies | 3 | Active |
| US9217196B2 | Method for forming DLC film on spline shaft and hot cathode PIG plasma CVD device | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8734913B2 | Formation method of coating | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US5814217A | Magnetic separator for needle-shaped chips | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8518863B2 | Sliding member | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US8673409B2 | Formation method of coating | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.