Average Co-Inventor Count = 3.43
ph-index = 1
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. Matsushita Graphic Communication Systems, Inc. (2 from 191 patents)
2 patents:
1. 6289194 - Toner cartridge and image forming apparatus
2. D443636 - Toner cartridge