FIRST CO.
8Patents
5Active
8Granted
54Portfolio score
Filing activity: Nov 3, 1970 → Mar 11, 2024
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6109339A | Heating system | Mechanical Engineering; Lighting; Heating | 43 | Expired |
| US4633766A | Adapter for joining heater and air conditioning elements | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US3949764A | Treatment of natural and synthetic hair with a heat-settable composition | Emerging Cross-Sectional Technologies | 6 | Expired |
| US12359827B2 | Independent temperature control for rooms | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9981303B2 | Tube expander for heat exchanger coil units | Performing Operations; Transporting | 0 | Active |
| US9409225B2 | Tube expander for heat exchanger coil units | Performing Operations; Transporting | 0 | Active |
| US11662104B2 | Independent temperature control for rooms | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11927350B2 | Independent temperature control for rooms | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.