Average Co-Inventor Count = 3.43
ph-index = 1
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. Hayashi Telempu Co., Ltd. (1 from 33 patents)
2. Hayashi Telempu Corporation (1 from 18 patents)
2 patents:
1. 10675952 - Winding device
2. 9481233 - Sheet winding apparatus