Average Co-Inventor Count = 2.25
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. Mattel, Inc. (3 from 1,702 patents)
3 patents:
1. 6565407 - Talking doll having head movement responsive to external sound
2. 4597700 - Record engraving apparatus
3. 4329808 - Paper-airplane-making and launching device