Average Co-Inventor Count = 1.85
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 (4 from 33,404 patents)
4 patents:
1. 11997431 - Illumination device with projector and illumination device
2. 11733600 - Illumination device with projector and illumination device
3. 11641454 - Projection apparatus
4. 10585340 - Projector