Average Co-Inventor Count = 2.00
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. Rothmans International Services Limited (2 from 15 patents)
2 patents:
1. 5327916 - Filter tip cagarette
2. 5307823 - Rod of smoking material and cigarettes made therefrom