Average Co-Inventor Count = 6.00
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. The Gillette Company (1 from 2,663 patents)
2. Berol Corporation (1 from 102 patents)
2 patents:
1. 6518329 - Liquid ink
2. 6075070 - Marking instrument including liquid ink