Average Co-Inventor Count = 3.43
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. Yokogawa Medical Systems, Limited (4 from 73 patents)
4 patents:
1. 5168877 - Ultrasonic diagnostic apparatus
2. 5018528 - Pulse Doppler ultrasonic diagnostic system
3. 4694680 - Ultrasound diagnostic equipment
4. 4674516 - Ultrasonic delay line matrix switch check system