Average Co-Inventor Count = 5.00
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. Ricoh Company, Ltd. (1 from 28,546 patents)
2. Bridgestone Corporation (1 from 5,119 patents)
1 patent:
1. 8999501 - Urethane foam member, seal structure, toner storage container, process cartridge, image forming apparatus