Average Co-Inventor Count = 1.60
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. Other (1 from 832,843 patents)
2. Phonic Ear Inc. (1 from 6 patents)
2 patents:
1. 4864611 - Telephone handset attachment for use in-the-ear hearing aids
2. D280022 - Hearing aid transducer or the like