Average Co-Inventor Count = 2.50
ph-index = 5
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. S.t. Corporation (3 from 20 patents)
2. Hitachi, Ltd. (1 from 42,508 patents)
3. Hitachi Building Systems Co., Ltd. (1 from 10 patents)
5 patents:
1. D940796 - Robot
2. D879853 - Communication robot
3. D634209 - Container for chemical diffuser
4. D624170 - Casing of chemical diffuser
5. D623284 - Chemical diffuser