Average Co-Inventor Count = 2.00
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. Sumitomo Heavy Industries, Ltd. (1 from 1,177 patents)
2. Toho Beslon Co., Ltd. (1 from 33 patents)
3. Japan Marine Machinery Development Assoc. (1 from 1 patent)
1 patent:
1. 4443726 - Brushes and method for the production thereof