Average Co-Inventor Count = 4.00
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. Kabushiki Kaisha Toshiba (3 from 52,722 patents)
3 patents:
1. 7287624 - Double deck elevator
2. 7077240 - Covers between an upper cage and a lower cage of a double deck elevator
3. 6615952 - Double deck elevator