Average Co-Inventor Count = 1.71
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. Parker Pen Products (6 from 33 patents)
6 patents:
1. D597136 - Clip for a writing instrument
2. D596669 - Writing instrument
3. D591347 - Writing instrument
4. D589090 - Grip and barrel for a writing instrument
5. D585937 - Writing instrument
6. D579047 - Writing instrument