Average Co-Inventor Count = 2.67
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. Olympus Corporation (2 from 8,194 patents)
2 patents:
1. 10438585 - Voice recording device and voice recording control method
2. 9286946 - Voice recording and playback device, and control method for voice recording and playback device