Average Co-Inventor Count = 3.27
ph-index = 2
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. (3 from 42,485 patents)
3 patents:
1. 5117390 - Semiconductor memory system for use in logic LSI's
2. 5023835 - Semiconductor memory system for use in logic LSI's
3. 4970687 - Semiconductor memory device having a timing generator circuit which