Average Co-Inventor Count = 4.00
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. Sony Corporation (1 from 58,132 patents)
2. Tanaka Kogyo Corporation Limited (1 from 1 patent)
1 patent:
1. 5521886 - Diaphragm for use with an electro-acoustic transducer and method of