Average Co-Inventor Count = 3.43
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. (4 from 42,485 patents)
4 patents:
1. 7165106 - Method of managing operation of computer system
2. 7155498 - Computer operation management system
3. 6665716 - Method of analyzing delay factor in job system
4. 6170010 - Computer operation management system