Average Co-Inventor Count = 2.57
ph-index = 3
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. Ikegami Tsushinki Co., Ltd. (3 from 82 patents)
3 patents:
1. 5120042 - Document sheet feeder
2. 4830357 - Sorting machine
3. 4819931 - Sorting apparatus