Average Co-Inventor Count = 1.43
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)
3 patents:
1. 6752156 - Humidification cylinder and method of humidifying material
2. 6286515 - Humidification cylinder
3. 4619276 - Tobacco processing