Average Co-Inventor Count = 7.00
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. Hatachi Ltd (1 from 13 patents)
2. Hatachi Advanced Systems Corp (1 from 1 patent)
3. Hatachi Keiyo Engineering Co, Ltd (1 from 1 patent)
1 patent:
1. 7110548 - Cryptographic communication method, encryption algorithm shared control method, encryption algorithm conversion method and network communication system