Average Co-Inventor Count = 1.58
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. 7031934 - Electronic commerce system and method for providing commercial information in electronic commerce system
2. 6477521 - Integrated information processing system capable of supplying specific information to person
3. 6070148 - Electronic commerce system and method for providing commercial
4. 5963926 - Computer implemented method, system and apparatus for processing various
5. 5850219 - Method and system for electronic document approval with displayed imprint