Average Co-Inventor Count = 3.11
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. Sekisui Kagaku Kogyo Kabushiki Kaisha (2 from 232 patents)
2 patents:
1. 4951758 - Method of drilling a branch line aperture after internal lining of a
2. 4221303 - Anticorrosive liquid tank with offset lining joints