Average Co-Inventor Count = 2.67
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. Seiko Epson Corporation (2 from 33,464 patents)
2 patents:
1. 8142973 - Liquid developer and image forming apparatus
2. 7955770 - Photoconductor, photoconductor cartridge and image-forming apparatus