Average Co-Inventor Count = 2.68
ph-index = 7
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. (8 from 42,508 patents)
2. Xanavi Informatics Corporation (2 from 146 patents)
3. Hitachi Communication System, Inc. (1 from 5 patents)
10 patents:
1. 6952643 - Road traffic information output apparatus
2. 6346893 - Automotive navigation system
3. 5315705 - Communication address management system
4. 5267245 - ISDN communication control unit and control method
5. 4569787 - Process and apparatus for treating radioactive waste
6. 4507390 - Chromatographic analysis for anions involving complexing anions with a
7. 4395335 - Reproduction method of filter demineralizer in condensate cleanup system
8. 4382413 - Earthquake resistant crane
9. 4314828 - Method and system for regenerating dehumidifier for use in charcoal
10. 4045539 - Process for decontaminating gas containing radioactive iodine