Average Co-Inventor Count = 3.31
ph-index = 15
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. (28 from 42,517 patents)
28 patents:
1. 5936609 - Handy information terminal apparatus
2. 5805125 - Portable information processing apparatus and liquid crystal display
3. 5646872 - Information processing apparatus
4. 5483253 - Portable information processing apparatus and liquid crystal display
5. 5377330 - Document editing apparatus for editing document data and image data
6. 5220611 - System for editing document containing audio information
7. 5034884 - System providing key scan key address extraction and bitwise signal
8. 4890256 - Document editing apparatus having document collator function
9. 4887165 - Document editing apparatus having detachable image reader
10. 4858171 - Word processor with selective placement of printhead for printing of
11. 4825308 - Data processing system
12. 4757312 - Image display apparatus
13. 4599608 - Circuit preventing phantom input in a switch matrix
14. 4549092 - Control system for illumination lamp installed in building equipped with
15. 4496942 - Method and apparatus for door operation remote control