Average Co-Inventor Count = 1.50
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. Sennheiser Electronic Gmbh & Co Kg (3 from 296 patents)
2. Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v. (1 from 4,812 patents)
4 patents:
1. D935427 - Audio/video appliance for reproducing sounds or images
2. D909983 - Sound amplifier
3. D868021 - Sound amplifier
4. D813281 - Robot