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. Oki Data Corporation (2 from 1,875 patents)
2 patents:
1. D379634 - Toner cartridge
2. D377662 - Image drum cartridge