Average Co-Inventor Count = 1.50
ph-index = 2
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. Tomy Company, Ltd. (1 from 577 patents)
2. Tomy Kogyo Co., Ltd. (1 from 376 patents)
2 patents:
1. 5310377 - Illuminated sound producing toy
2. 4938730 - Toy house with magnetically actuated light