Average Co-Inventor Count = 1.41
ph-index = 5
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 Parker Pen Company (6 from 29 patents)
2. Parker Pen (benelux) B.v. (1 from 10 patents)
3. Parker Pen (i.p.) Limited (1 from 3 patents)
8 patents:
1. 5417504 - Refill unit for a writing instrument
2. D330217 - Writing instrument
3. D286791 - Fountain pen
4. D285936 - Push button ball point pen
5. D285937 - Push button mechanical pencil
6. D284872 - Ball point pen
7. D280422 - Fountain pen
8. 4506426 - Pocket clip for a writing instrument