Average Co-Inventor Count = 1.50
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 (3 from 2,659 patents)
2. Scripto LLC (1 from 14 patents)
4 patents:
1. 4786196 - Pencil with a tapered follower
2. 4752146 - Coloring crayons
3. 4547090 - Writing instrument with nib operated valve
4. 4221493 - Pen nibs