Average Co-Inventor Count = 3.53
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. Brown & Williamson Tobacco Corporation (5 from 282 patents)
5 patents:
1. 4636183 - Apparatus for making grooves in cigarette filters
2. 4480982 - Apparatus for making grooves in cigarette filters
3. 4354591 - Carton collating and transfer apparatus
4. 4351792 - Apparatus for making grooves in tobacco smoke filters
5. 4324540 - Apparatus for making grooves in tobacco smoke filters