Average Co-Inventor Count = 3.78
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. Other (4 from 832,680 patents)
2. Hitachi, Ltd. (3 from 42,485 patents)
3. Xanavi Informatics Corporation (2 from 146 patents)
4. Fuso Chemical Co., Ltd. (1 from 14 patents)
8 patents:
1. 6756919 - Map display apparatus
2. 6603407 - Map display apparatus
3. 6454164 - Pocket-size information transfer apparatus having dual IC card insertion slots and IC card using the same
4. 6278383 - Map display apparatus
5. 5964810 - Map display apparatus
6. 5929427 - Portable card reader/writer
7. 5917436 - Map display apparatus
8. 4590260 - Method for producing copoly(amino acid)