Average Co-Inventor Count = 1.96
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. Yepzon Oy (2 from 3 patents)
2. Kone Corporation (1 from 1,036 patents)
3 patents:
1. D915919 - Push button for hoists, lifts and elevators
2. D809947 - Locating and tracking device
3. D749440 - Locating and tracking device