Perfect Union Co., Ltd.
49Patents
13Active
49Granted
40Portfolio score
Filing activity: Mar 3, 2000 → Feb 8, 2017 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD452250S | MP3 player | General | 250 | Expired |
| USD456066S1 | Electric heater | General | 70 | Expired |
| USD538297S1 | MP3 player | General | 70 | Expired |
| USD616080S1 | Electric heater | General | 45 | Expired |
| USD467324S1 | Electric heater | General | 43 | Expired |
| USD483102S1 | Electric heater | General | 41 | Expired |
| USD499473S1 | Tower heater | General | 40 | Expired |
| USD680636S1 | Electronic humidifier and heater | General | 36 | Active |
| USD467325S1 | Electric heater | General | 30 | Expired |
| USD691250S1 | Electronic heater | General | 28 | Active |
| USD518019S1 | MP3 player | General | 27 | Expired |
| USD530002S1 | Industrial heater | General | 24 | Expired |
| USD483101S1 | Electric heater | General | 21 | Expired |
| USD456499S1 | Electric ceramic heater | General | 19 | Expired |
| USD502165S1 | MP3 player | General | 19 | Expired |
| USD532880S1 | Ceramic electric heater | General | 19 | Expired |
| USD546430S1 | Electric heater | General | 18 | Expired |
| USD538415S1 | Ceramic electric heater | General | 17 | Expired |
| USD532884S1 | Electric heater | General | 17 | Expired |
| USD518817S1 | Multimedia speaker set | General | 15 | Expired |
| US9533729B1 | Foldable electrically powered vehicle | Performing Operations; Transporting | 15 | Active |
| USD617440S1 | Chargeable fan | General | 15 | Expired |
| USD532881S1 | Electric heater | General | 15 | Expired |
| USD671095S1 | Multimedia speaker | General | 14 | Active |
| USD565029S1 | Multimedia speaker set | General | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.