Average Co-Inventor Count = 1.06
ph-index = 10
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Aiphone Co., Ltd. (17 from 78 patents)
2. Airphone Co., Ltd. (1 from 1 patent)
18 patents:
1. D869424 - Intercom
2. D864146 - Intercom
3. D844582 - Interphone
4. D842262 - Interphone
5. D842263 - Interphone
6. D773428 - Interphone collective entrance unit
7. D771008 - Interphone master unit
8. D771007 - Interphone master unit
9. D766204 - Interphone
10. D765051 - Interphone
11. D761752 - Interphone
12. D752011 - Interphone
13. D752012 - Interphone
14. D744452 - Interphone
15. D744451 - Interphone