Average Co-Inventor Count = 1.33
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. Audio-technica Corporation (5 from 217 patents)
5 patents:
1. D1059343 - Headshell
2. D1055905 - Pick-up cartridge
3. 11164597 - Head shell
4. 11017800 - Head shell
5. D876429 - Pick-up cartridge