Average Co-Inventor Count = 2.40
ph-index = 1
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. (4 from 78 patents)
4 patents:
1. 10757266 - Terminal device, and intercom system provided with terminal device
2. 10659617 - Building controller and interphone system
3. 10616420 - Intercom system
4. 10334114 - Collective housing/building entrance device and entryphone system having that collective housing/building entrance device