Average Co-Inventor Count = 1.33
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. Doppler E. Doppler & Co. Gmbh (4 from 10 patents)
2. Knirps International Gmbh (3 patents)
3. Doppler Group Gmbh (1 patent)
4 patents:
1. D738608 - Umbrella
2. D738100 - Bracket for an umbrella
3. D640464 - Umbrella
4. D631243 - Lift mechanism for an umbrella or the like