Average Co-Inventor Count = 2.00
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. Brother Kogyo Kabushiki-kaisha (2 from 17,580 patents)
2 patents:
1. 5131309 - Performance recording/reproducing apparatus enabling correction or
2. 4982642 - Metronome for electronic instruments