Average Co-Inventor Count = 2.67
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. Bridgestone Corporation (2 from 5,118 patents)
2. Japan Synthetic Rubber Co., Ltd. (1 from 377 patents)
3. Japan Synthetic Rubber (1 from 1 patent)
2 patents:
1. 5232987 - Rubber compositions
2. 5034465 - Rubber compositions