Average Co-Inventor Count = 3.32
ph-index = 6
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. Kyushu Hitachi Maxell, Ltd. (5 from 37 patents)
2. Hitachi, Ltd. (4 from 42,508 patents)
9 patents:
1. 6081254 - Color correction system of imaging apparatus
2. D317367 - Electric nail polisher
3. D306917 - Electric hair trimmer
4. D306777 - Electric shaver
5. D306779 - Electric trimmer
6. D306497 - Electric shaver
7. D298032 - Combined audio disc player, portable cassette recorder and radio
8. D294692 - Combined portable cassette recorder and radio
9. D276804 - Combined portable cassette recorder and radio