Average Co-Inventor Count = 1.20
ph-index = 3
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. Nec Corporation (2 from 35,670 patents)
2. Mu Company Ltd. (1 from 3 patents)
3 patents:
1. 5745540 - Portable bill counter detecting forgeries
2. 5469567 - System for secondary database data block buffering with block save
3. 5293617 - Data base system capable of quickly restoring a data block in a data