Average Co-Inventor Count = 4.00
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 2,532 patents)
2. Hoya Candeo Optronics Corporation (1 from 36 patents)
2 patents:
1. 6878277 - Photocatalytic filter, photocatalytic filter device and method for manufacturing photocatalytic filter
2. 6468428 - Glass material for carrying a photocatalyst, filter device using the same and light irradiating method