Average Co-Inventor Count = 3.79
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. Yamura Shinko Seisakusho Co., Ltd. (2 from 2 patents)
2. Kokusai Denshin Denwa Co., Ltd. (1 from 226 patents)
3. Kabushiki Kaisha Ace Denken (1 from 99 patents)
3 patents:
1. 5560467 - Exchange machine having bank note qualification determining capacity
2. 4149196 - Facsimile transmitter receiver system
3. 4075664 - Facsimile scanning device