Average Co-Inventor Count = 3.43
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 patents:
1. 7929244 - Magnetic tape recording/reproducing apparatus
2. 7379263 - Magnetic recording/reproducing apparatus