Average Co-Inventor Count = 3.43
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. (8 from 78 patents)
8 patents:
1. 12294671 - Multiple dwelling house interphone system
2. 12219096 - Multiple dwelling house interphone system
3. 12113927 - Multiple dwelling house interphone system
4. 12052384 - Multiple dwelling house interphone system
5. 11758054 - Multiple dwelling house interphone system
6. 10944940 - Intercom system for collective housing
7. 10721361 - Interphone system and setting apparatus
8. 10652378 - Intercom system