Average Co-Inventor Count = 3.00
ph-index = 2
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 (1 from 10 patents)
2. Doppler Group Gmbh (1 from 1 patent)
3. Advanced Firefighting Technology Gmbh (0 patent)
2 patents:
1. D835394 - Umbrella top
2. D803545 - Umbrella handle