AIPHONE CO., LTD.
79Patents
45Active
79Granted
47Portfolio score
Filing activity: May 8, 1978 → Mar 23, 2022 · 10 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD595260S1 | Interphone | General | 121 | Expired |
| USD588574S1 | Interphone | General | 117 | Expired |
| USD561734S1 | Interphone with a TV monitor | General | 48 | Expired |
| USD686184S1 | Interphone | General | 44 | Active |
| USD505127S1 | Interphone | General | 35 | Expired |
| USD394656S | Intercom master station | General | 30 | Expired |
| USD620917S1 | Interphone | General | 29 | Expired |
| USD490396S1 | Interphone | General | 28 | Expired |
| USD773428S1 | Interphone collective entrance unit | General | 27 | Active |
| US7015946B2 | Television door intercom apparatus | Electricity | 26 | Expired |
| USD578993S1 | Portable intercom with a TV monitor | General | 26 | Expired |
| USD491551S1 | Interphone | General | 23 | Expired |
| USD466882S1 | Interphone | General | 23 | Expired |
| USD481698S1 | Interphone | General | 23 | Expired |
| USD766204S1 | Interphone | General | 22 | Active |
| USD480702S1 | Interphone | General | 22 | Expired |
| US4263484A | Microphone unit | Electricity | 20 | Expired |
| US6671360B2 | Intercom system for a building or apartment house | Emerging Cross-Sectional Technologies | 19 | Expired |
| USD729760S1 | Interphone | General | 19 | Active |
| USD820804S1 | Intercom | General | 18 | Active |
| USD820805S1 | Intercom | General | 17 | Active |
| USD457866S1 | Interphone | General | 16 | Expired |
| USD554103S1 | Interphone | General | 15 | Expired |
| USD509820S1 | Interphone | General | 14 | Expired |
| USD624522S1 | Interphone | General | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.