Average Co-Inventor Count = 6.00
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. Tdk Corporation (1 from 7,992 patents)
1 patent:
1. 4849843 - Demagnetizer for a magnetic head of a cassette tape recorder