Average Co-Inventor Count = 2.00
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. Hoya Corporation (2 from 2,535 patents)
2. Pentax Corporation (2 from 1,056 patents)
4 patents:
1. 7643086 - Electronic still camera having a sealing member for optically isolating an image pickup element
2. 7508441 - Electronic still camera and image pick-up unit
3. 6965134 - Image pick-up unit including an image pick-up device and optical filter layers
4. 6487517 - Target for photogrammetric analytical measurement system