Average Co-Inventor Count = 4.83
ph-index = 4
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. (5 from 42,485 patents)
2. Hitachi Keiyo Engineering Co., Ltd. (1 from 34 patents)
3. Hitachi Keiyo Engineering & Systems, Ltd. (1 patent)
5 patents:
1. 7519968 - Decentralized control system for network connection
2. 7115039 - Contents distribution system for simulation ride system, distribution apparatus for ride contents administration center, simulation ride control apparatus and computer software
3. 5189707 - Method of loading surface mounted device and an apparatus therefor
4. 5115179 - Portable teaching apparatus
5. 4737845 - Method of loading surface mounted device and an apparatus therefor