Average Co-Inventor Count = 4.44
ph-index = 1
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. Mitsumi Electric Company Ltd. (2 from 1,572 patents)
2. Canon Kabushiki Kaisha (1 from 90,697 patents)
2 patents:
1. 7254819 - Recording medium drive unit
2. 5397186 - Bearing structure for rotating shaft