Impinj, Inc.
🏢 View company profile →369Patents
281Active
369Granted
59Portfolio score
Filing activity: Aug 13, 2001 → May 23, 2024 · 73 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD546821S1 | Radio frequency identification tag antenna assembly | General | 188 | Expired |
| US7026935B2 | Method and apparatus to configure an RFID system to be adaptable to a plurality of environmental conditions | Physics | 165 | Expired |
| US7283037B2 | RFID tags adjusting to different regulatory environments, and RFID readers to so adjust them and methods | Physics | 72 | Expired |
| US6950342B2 | Differential floating gate nonvolatile memories | Physics | 65 | Expired |
| US7245213B1 | RFID readers and RFID tags exchanging encrypted password | Electricity | 57 | Expired |
| US7116240B2 | Method and apparatus for controlled persistent ID flag for RFID applications | Physics | 54 | Expired |
| US7561866B2 | RFID tags with power rectifiers that have bias | Physics | 52 | Active |
| USD546819S1 | Radio frequency identification tag antenna assembly | General | 52 | Expired |
| US6853583B2 | Method and apparatus for preventing overtunneling in pFET-based nonvolatile memory cells | Physics | 50 | Expired |
| US6664909B1 | Method and apparatus for trimming high-resolution digital-to-analog converter | Electricity | 48 | Expired |
| US7973645B1 | RFID reader devices and methods thereof | Physics | 46 | Active |
| USD547754S1 | Radio frequency identification tag antenna assembly | General | 46 | Expired |
| USD620484S1 | RFID tag antenna | General | 46 | Expired |
| USD547306S1 | RFID antenna | General | 43 | Expired |
| US7215251B2 | Method and apparatus for controlled persistent ID flag for RFID applications | Physics | 43 | Expired |
| US7253719B2 | Multi-oscillator clock signals | Physics | 42 | Expired |
| USD548225S1 | Radio frequency identification tag antenna assembly | General | 42 | Expired |
| USD611037S1 | RFID tag antenna | General | 41 | Expired |
| US8866594B1 | RFID tag and reader authentication by trusted authority | Electricity | 41 | Active |
| US9792472B1 | Tag-handle-based authentication of RFID readers | Electricity | 40 | Active |
| US10819319B1 | Level shifter circuit with self-gated transition amplifier | Electricity | 40 | Active |
| US9087281B2 | Dual-frequency RFID tag with isolated inputs | Electricity | 40 | Active |
| USD617320S1 | RFID tag antenna | General | 39 | Expired |
| USD620928S1 | RFID tag antenna | General | 39 | Expired |
| US7400255B2 | Wireless functional testing of RFID tag | Emerging Cross-Sectional Technologies | 39 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.