Average Co-Inventor Count = 4.40
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 (3 from 74 patents)
2. Kabushiki Kaisha Toshiba (1 from 52,735 patents)
3. Toshiba Fuel Cell Power Systems Corporation (1 from 4 patents)
4. Toshiba Energy Systems & Solutions Corporation (304 patents)
4 patents:
1. 9543597 - Fuel-cell power generation system and method of manufacturing the same
2. 7600627 - Conveyor apparatus
3. 7243760 - Elevator door unit having mechanism to release lock unit manually in emergency
4. 7178638 - Car door apparatus of elevator