Average Co-Inventor Count = 2.00
ph-index = 2
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. Hayashi Denki Co. Ltd. (4 from 8 patents)
4 patents:
1. D266270 - Fetus pulse and blood flow detector
2. D264623 - Blood flow detector
3. D262738 - Blood flow detector
4. D262402 - Blood flow detector