Average Co-Inventor Count = 2.40
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. Pierburg Gmbh (1 from 169 patents)
2. Preh-werke Gmbh Co. Kg (1 from 70 patents)
3. Pierburg Ag (1 from 32 patents)
2 patents:
1. 5765435 - Apparatus for indicating fuel level in a fuel tank
2. 5226392 - Fuel pressure control valve for internal combustion engines