Average Co-Inventor Count = 3.47
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. Shimizu Construction Co., Ltd. (2 from 116 patents)
2. Dainihon Glass Industry Co., Ltd. (1 from 5 patents)
2 patents:
1. 5025605 - Meshwork reinforced and pre-stressed concrete member, method and
2. 5012622 - Structural filler filled steel tube column