Average Co-Inventor Count = 1.80
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. Progress-elektrogerate Mauz & Pfeiffer Gmbh & Co. (2 from 4 patents)
2. Rowenta Werke Gmbh (1 from 234 patents)
3 patents:
1. 5044263 - Electrically heated toaster
2. 4399585 - Vacuum cleaner with constant air flow
3. 4370776 - Vacuum cleaner for household and industrial application