Average Co-Inventor Count = 3.00
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. Hitachi, Ltd. (1 from 42,494 patents)
2. Hitachi Device Engineering Co., Ltd. (1 from 217 patents)
1 patent:
1. 5235538 - Semiconductor operation device with memory for storing operation codes