PERFTECH, INC.
59Patents
57Active
59Granted
50Portfolio score
Filing activity: Dec 18, 2001 → Mar 28, 2024 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8095666B2 | Internet provider subscriber communications system | Electricity | 251 | Active |
| US7328266B2 | Internet provider subscriber communications system | Electricity | 21 | Expired |
| US8108524B2 | Internet connection user communications system | Electricity | 15 | Expired |
| US8806004B2 | Method and apparatus of processing invalid user input search information | Electricity | 7 | Active |
| US8793386B2 | Internet provider subscriber communications system | Electricity | 5 | Active |
| US9727658B2 | Method and apparatus of processing invalid user input search information | Electricity | 5 | Active |
| US8838809B2 | Internet connection user communications system | Electricity | 5 | Active |
| US9307041B2 | Internet connection user communications system | Electricity | 5 | Active |
| US10225210B2 | Internet provider subscriber communications system | Electricity | 5 | Active |
| US8161284B1 | System, method and computer readable medium for message authentication to subscribers of an internet service provider | Electricity | 5 | Active |
| US10616131B2 | Internet provider subscriber communications system | Electricity | 3 | Active |
| US10915596B2 | Method and apparatus of processing invalid user input search information | Electricity | 2 | Active |
| US10979484B2 | Method and system for providing watermark to subscribers | Electricity | 2 | Active |
| US11336586B2 | Internet provider subscriber communications system | Electricity | 2 | Active |
| US10834157B2 | Internet provider subscriber communications system | Electricity | 2 | Active |
| US11743205B2 | Internet provider subscriber communications system | Electricity | 1 | Active |
| US11580185B2 | Method and apparatus of processing invalid user input search information | Electricity | 1 | Active |
| US9936037B2 | System and method for providing redirections | Physics | 1 | Active |
| US8856314B1 | System, method and computer readable medium for determining users of an internet service | Electricity | 1 | Active |
| US10986102B2 | System, method and computer readable medium for processing unsolicited electronic mail | Electricity | 0 | Active |
| US10986417B2 | System and method for set-top-box messaging display | Electricity | 0 | Active |
| US10904265B2 | System, method and computer readable medium for message authentication to subscribers of an internet service provider | Electricity | 0 | Active |
| US10631062B2 | System and method for set-top-box messaging display | Electricity | 0 | Active |
| US10348738B2 | System, method and computer readable medium for message authentication to subscribers of an internet service provider | Electricity | 0 | Active |
| US8489770B2 | Method and system for providing watermark to subscribers | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.