Average Co-Inventor Count = 4.00
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. (6 from 78 patents)
6 patents:
1. 12294671 - Multiple dwelling house interphone system
2. 12219085 - Multiple dwelling house interphone system
3. 12219096 - Multiple dwelling house interphone system
4. 12113927 - Multiple dwelling house interphone system
5. 12052384 - Multiple dwelling house interphone system
6. 11758054 - Multiple dwelling house interphone system