Average Co-Inventor Count = 3.75
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. Hitachi, Ltd. (2 from 42,535 patents)
2 patents:
1. 7805484 - Information delivery system and method using positional information
2. 7337283 - Method and system for managing storage reservation