Average Co-Inventor Count = 1.50
ph-index = 2
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. (1 from 8,780 patents)
2. Tottori Sanyo Electric Co., Ltd. (1 from 143 patents)
2 patents:
1. D472540 - Telephone
2. D449851 - Printer with copy function