Average Co-Inventor Count = 22.99
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. (1 from 42,517 patents)
2. Hitachi Ulsi Engineering Corp. (1 from 87 patents)
3. Hitachi Tohbu Semiconductor, Ltd. (1 from 35 patents)
4. Hitachi Hokkai Semiconductor Ltd. (1 from 26 patents)
1 patent:
1. 5910010 - Semiconductor integrated circuit device, and process and apparatus for