Average Co-Inventor Count = 1.00
ph-index = 4
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. Sansui Electric Co., Ltd. (5 from 71 patents)
5 patents:
1. D251003 - Tone arm
2. D249946 - Amplifier
3. D249143 - Record player
4. D247749 - Tuner
5. D247488 - Record player