Average Co-Inventor Count = 2.73
ph-index = 4
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. Sennheiser Electronic Gmbh & Co Kg (5 from 296 patents)
5 patents:
1. 8818004 - Condenser microphone
2. D605183 - Microphone
3. D603381 - Microphone
4. D602920 - Microphone
5. 7251341 - Microphone