Average Co-Inventor Count = 1.50
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 (3 from 1,875 patents)
3 patents:
1. D763347 - Toner cartridge
2. D749166 - Toner cartridge
3. 9069292 - Development device and image formation apparatus