Average Co-Inventor Count = 2.57
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. British American Tobacco (Investments) Limited (2 from 395 patents)
2. British-American Tobacco Company Limited (1 from 121 patents)
3 patents:
1. 7249605 - Tobacco smoke filter elements
2. 7100420 - Cigarette monitoring
3. 6631722 - Tobacco smoke filter elements