| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 5 | |
| #2 | Germany | 3 | |
| #3 | United States | 2 | |
| #4 | China | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Ireland | 1 | |
| #8 | Israel | 1 | |
| #9 | Portugal | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kobayashi Kazutaka | 5 |
| #2 | Yoshida Shinichi | 5 |
| #3 | Lequy Michel | 2 |
| #4 | Nagata Hiroshi | 2 |
| #5 | Sakuma Shinji | 2 |
| #6 | Ichiie Masaaki | 1 |
| #7 | Kouno Hiromi | 1 |
| #8 | Kishi Nomura Chihiro Takemoto | 1 |
| #9 | Takemoto Takashi | 1 |
| #10 | Kojima Yoshinori | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2009159347A | Intercom | |
| JP2007186276A | Main unit of interphone for lifting facility | |
| JP2004048092A | Intercom device | |
| JPH07245758A | Video interphone set | |
| IE913957A1 | Interphone | |
| DE3113996A1 | REMOTE STATION | |
| US4355329A | Remote station | |
| JPS55166440A | Power supply circuit |