Average Co-Inventor Count = 3.10
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. Toshiba Elevator Kabushiki Kaisha (4 from 74 patents)
4 patents:
1. 7562745 - Elevator with an operation space in a center of a machine room
2. 7413055 - Elevator
3. 7383921 - Elevator with a support for a hoisting machine
4. 7383924 - Machine room-less elevator