Average Co-Inventor Count = 3.25
ph-index = 3
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. Citizen Watch Company, Ltd. (3 from 2,002 patents)
3 patents:
1. 4652932 - Liquid crystal display television receiver
2. 4291402 - Plastic watch case
3. 4186552 - Wristwatch case