Average Co-Inventor Count = 1.00
ph-index = 6
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. Dong-a Pencil Co., Ltd. (6 from 39 patents)
6 patents:
1. D487770 - Ball point pen
2. D487771 - Ball point pen
3. D482398 - Marker pen
4. D480756 - Ball point pen
5. D463491 - Ball point pen
6. D462990 - Ball point pen