The Hong Kong and China Gas Company Limited
3Patents
2Active
3Granted
37Portfolio score
Filing activity: Oct 22, 2001 → Feb 10, 2017
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9377125B2 | Shut-off device for pipe | Emerging Cross-Sectional Technologies | 4 | Active |
| US6761379B1 | Pipe fittings | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US10197222B2 | Shut-off device for pipe | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.