Average Co-Inventor Count = 2.29
ph-index = 3
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. Epos Group A/s (3 from 28 patents)
2. Sennheiser Communications A/s (1 from 53 patents)
4 patents:
1. D982554 - Speaker
2. D976815 - Power box
3. D964315 - Headset
4. 9788100 - Headphones with slidable lead element in earphone housings