Average Co-Inventor Count = 9.26
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. Shin Meiwa Industry Co., Ltd. (2 from 33 patents)
2 patents:
1. 4995765 - Method of collecting wastes and system therefor
2. 4993882 - Waste collection method