Average Co-Inventor Count = 2.62
ph-index = 5
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. Cigarette Components Limited (5 from 7 patents)
2. Other (2 from 832,718 patents)
7 patents:
1. 6718989 - Filter for a cigarette and a filter-tipped cigarette
2. 6422244 - Filter for a cigarette and filter cigarette
3. 6302114 - Tobacco smoke filter
4. 6080457 - Particulate sorbent smoke filter
5. 5787902 - Concentric core filter
6. 5662126 - Smoke filter containing particulate smoke modifying additive
7. 4904308 - Adjustable smoker's mouthpiece