Average Co-Inventor Count = 1.64
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. Philip Morris Inc. (3 from 759 patents)
3 patents:
1. 5363955 - Hinged lid box with attached coupon
2. 5341925 - Cigarette hardpack having rounded corners and lid retaining flaps
3. 4930344 - Instrument for measuring package seals