Average Co-Inventor Count = 2.25
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. Maxell Izumi Co., Ltd. (2 from 15 patents)
2. Izumi Products Company (1 from 123 patents)
3 patents:
1. 11312033 - Rotary electric shaver
2. 11135732 - Rotary electric shaver
3. 9364960 - Rotary electric shaver