Average Co-Inventor Count = 5.54
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. Philip Morris Inc. (3 from 759 patents)
2. Philip Morris Products Inc. (1 from 31 patents)
3 patents:
1. 5450862 - Wrapper for a smoking article
2. 5230802 - Extraction process using a novel organic acid as a liquid ion exchanger
3. 5152304 - Wrapper for a smoking article