Average Co-Inventor Count = 1.60
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. Sony Corporation (1 from 58,132 patents)
2. Ricoh Company, Ltd. (1 from 28,584 patents)
2 patents:
1. 6879552 - Information recording and reproducing system enabling a selection of whether or not to perform an interruption and resumption of a data-recording
2. 5430375 - Position detecting apparatus using magneto-resistance effect element