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 33,418 patents)
2 patents:
1. 8267529 - Optical device having reflecting member attached to housing and projector having optical device
2. D589997 - Lamp for projector