Average Co-Inventor Count = 3.00
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. Amsterdam Printing & Litho, Inc. (6 from 34 patents)
6 patents:
1. D1006878 - Writing instrument
2. D923092 - Writing instrument
3. D923093 - Writing instrument
4. D881989 - Writing instrument
5. D878463 - Writing instrument
6. D863437 - Writing instrument