Bertrum Technologies LLC
7Patents
5Active
7Granted
38Portfolio score
Filing activity: Jul 2, 2003 → Dec 21, 2012 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7403793B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 43 | Expired |
| US7353018B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 24 | Expired |
| US7885684B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 8 | Active |
| US8019381B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 6 | Active |
| US8265691B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 3 | Active |
| US8346169B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 3 | Active |
| US8792828B2 | Enhanced wireless handset, including direct handset-to-handset communication mode | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.