Duracraft Corp.
🏢 View company profile →136Patents
0Active
136Granted
40Portfolio score
Filing activity: Jun 30, 1978 → Aug 5, 1996
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5558501A | Portable ceiling fan | Mechanical Engineering; Lighting; Heating | 180 | Expired |
| USD386576S | Humidifier | General | 126 | Expired |
| US5483616A | Humidifier tank with improved handle | Mechanical Engineering; Lighting; Heating | 118 | Expired |
| USD328341S | Portable electric heater | General | 111 | Expired |
| US5518370A | Portable electric fan with swivel mount | Mechanical Engineering; Lighting; Heating | 103 | Expired |
| USD323708S | Portable electrical fan | General | 83 | Expired |
| US5547343A | Table fan with vise clamp | Mechanical Engineering; Lighting; Heating | 77 | Expired |
| USD377523S | Air cleaner | General | 66 | Expired |
| USD395080S | Portable electric fan | General | 65 | Expired |
| USD374712S | Portable electric heater | General | 56 | Expired |
| USD355962S | Air cleaner | General | 52 | Expired |
| USD330074S | Portable electrical humidifier | General | 48 | Expired |
| USD354558S | Combined electric fan housing and stand therefor | General | 45 | Expired |
| US5514303A | Humidifier with removable suction tube | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US5611967A | Combination evaporative/warm mist humidifier | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US5295811A | Portable fan with electrical control retaining stand | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5143655A | Efficiently packaged humidifier device | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| USD318723S | Portable fan heater | General | 35 | Expired |
| USD359116S | Electric fan | General | 34 | Expired |
| US5215685A | Humidifier with water sealed impeller unit | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| USD323382S | Heater fan | General | 33 | Expired |
| USD364676S | Cool mist impeller humidifier | General | 32 | Expired |
| USD333866S | Heater fan | General | 29 | Expired |
| USD349566S | Air purifier | General | 29 | Expired |
| US5034162A | High capacity portable humidifier | Mechanical Engineering; Lighting; Heating | 29 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.