Average Co-Inventor Count = 10.47
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. Toshiba Elevator Kabushiki Kaisha (2 from 74 patents)
2 patents:
1. 8083048 - Conveyer apparatus
2. 7401691 - Conveyer apparatus having footsteps