Control Resource System
4Patents
0Active
4Granted
25Portfolio score
Filing activity: Oct 1, 1984 → Feb 22, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5078764A | Air purification apparatus | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4932988A | Air purification apparatus | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| USD316142S | Air purification unit | General | 5 | Expired |
| US4717402A | Air purification system | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.