Average Co-Inventor Count = 1.18
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. Oki Electric Industry Co., Ltd. (5 from 4,979 patents)
5 patents:
1. D433399 - Telephone
2. D381979 - Portable radiotelephone
3. D380215 - Portable radiotelephone
4. D364863 - Portable radio telephone
5. D364864 - Portable radio telephone