Average Co-Inventor Count = 6.00
ph-index = 3
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. The Nippon Signal Co., Ltd. (3 from 89 patents)
3 patents:
1. 6459656 - Information generating apparatus using elastic waves
2. 6292432 - Information generating apparatus using elastic waves
3. 6031790 - Information generator using elastic wave