Average Co-Inventor Count = 5.33
ph-index = 4
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. Philip Morris Inc. (4 from 759 patents)
4 patents:
1. 6026820 - Cigarette for electrical smoking system
2. 5988176 - Cigarette for electrical smoking system
3. 5915387 - Cigarette for electrical smoking system
4. 5499636 - Cigarette for electrical smoking system