Average Co-Inventor Count = 2.00
ph-index = 6
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. (6 from 78 patents)
6 patents:
1. D491551 - Interphone
2. D466883 - Interphone
3. D466882 - Interphone
4. D466491 - Interphone
5. D466099 - Interphone
6. D457866 - Interphone