Average Co-Inventor Count = 2.40
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. Marquardt Gmbh (4 from 121 patents)
4 patents:
1. D365552 - Keyboard
2. D346376 - Keyboard
3. D341134 - Keyboard
4. D340445 - Dual component keyboard unit