Average Co-Inventor Count = 1.11
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. Zebra Co., Ltd. (5 from 69 patents)
5 patents:
1. D596233 - Ballpoint pen
2. D574429 - Retractable marking pen
3. D570913 - Correction pen
4. D569911 - Cap for writing instrument
5. D553680 - Mechanical pencil