Average Co-Inventor Count = 2.90
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. Kawasaki Steel Corporation (3 from 1,256 patents)
2. The Yokohama Rubber Co., Ltd. (1 from 2,760 patents)
3. Kawatetsu Wire Products Company Ltd. (1 from 2 patents)
4. Kawatetsu Wire Products (1 from 1 patent)
3 patents:
1. 4776161 - Unbonded PC steel strand
2. 4635433 - Unbonded PC steel strand
3. 4304113 - Process of making plated wire for reinforcing rubber goods