Average Co-Inventor Count = 3.00
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. Canon Kabushiki Kaisha (3 from 90,872 patents)
3 patents:
1. 6320299 - Friction member used in vibration wave driving apparatus, and device using the vibration wave driving apparatus as driving source
2. 6141515 - Image forming apparatus comprising ultrasonic motors
3. 5085423 - Sheet feeding device