Average Co-Inventor Count = 1.33
ph-index = 4
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. (5 from 42,494 patents)
5 patents:
1. 5452380 - Method and system for imaging a text
2. 4931953 - Character pattern generation method and system therefor
3. 4853872 - Program execution method in a system having plural computers
4. 4733386 - Method of writing file data into a write-once type memory device
5. 4152763 - Control system for central processing unit with plural execution units