Average Co-Inventor Count = 4.80
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. Sumitomo Electric Industries, Limited (1 from 10,239 patents)
2. Sumitomo Heavy Industries, Ltd. (1 from 1,176 patents)
3. Sankyo Company, Limited (1 from 613 patents)
4. Nippon Telegraph and Telephone Public Corporation (1 from 522 patents)
2 patents:
1. 4011727 - Movable cable plow for constructing underwater cable
2. 4010149 - Analogs of LH-RH and process for preparing the same