Average Co-Inventor Count = 1.50
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. Sumitomo Gomu Kogyo Kabushiki Kaisha (2 from 14 patents)
2 patents:
1. 4655635 - Sand scattering device for artificial lawn
2. 4507015 - Arrangement for paving elastic surface material