Average Co-Inventor Count = 4.29
ph-index = 3
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 Electric Industries, Limited (3 from 10,273 patents)
3 patents:
1. 5922098 - Cleaning a glass preform with a high temperature inert gas during the
2. 5788734 - Method for drawing glass preform for optical fiber
3. 5674306 - Method and apparatus for drawing glass preform for optical fiber