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. Sankin Kogyo Kabushiki Kaisha (2 from 22 patents)
2 patents:
1. 4778388 - Root canal posts
2. 4689079 - Method of preparing impression taking and molding materials and dental