Average Co-Inventor Count = 4.44
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. Osaka Gas Company Limited (2 from 353 patents)
2. Asahi Glass Company, Limited (1 from 2,560 patents)
2 patents:
1. 5149891 - Method for preparing pitch fluoride
2. 5133802 - Water and oil repellent composition