Average Co-Inventor Count = 3.00
ph-index = 2
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. Kone Corporation (3 from 1,036 patents)
3 patents:
1. D840854 - Cylindrical emergency signaling device
2. 10053336 - Emergency button
3. D801842 - Emergency signaling device