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. Asahi Glass Company, Limited (1 from 2,560 patents)
2. Nippon Kokan Kabushiki Kaisha (1 from 487 patents)
1 patent:
1. 4697615 - Butterfly valve for controlling high-temperature fluid