Average Co-Inventor Count = 2.13
ph-index = 5
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. (8 from 4,979 patents)
8 patents:
1. D433399 - Telephone
2. D405799 - Internet voice gateway
3. D363280 - Portable radio telephone
4. D355183 - Portable radio telephone
5. D352707 - Portable radiotelephone
6. D335877 - Portable radiotelephone
7. D330693 - Battery unit for a portable radio telephone
8. D325908 - Portable telephone set