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. Sanyo Electric Co., Ltd. (2 from 8,777 patents)
2 patents:
1. 8467542 - Sound recording device, sound recording method, and sound recording program embodied on computer readable medium
2. 8315397 - Microphone device and portable recorder comprising same