Average Co-Inventor Count = 2.57
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. Sony Corporation (3 from 58,129 patents)
3 patents:
1. 6811630 - Ultrasonic vibration method and ultrasonic vibration apparatus
2. 6602733 - Method for fabricating electronic circuit device, semiconductor device and electronic circuit device including bump bonding
3. 5582357 - Coil winding apparatus