Average Co-Inventor Count = 1.58
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. Daimler-benz Ag (4 from 1,777 patents)
2. Fried. Krupp Gesellschaft MIT Beschrankter Haftung (1 from 268 patents)
4 patents:
1. 4258676 - Heating system producing warm air for motor vehicles driven by an
2. 3981644 - Sealing strip particularly for rotary engines
3. 3969048 - Rotary piston internal combustion engine of trochoidal construction
4. 3947162 - Radial seal for a rotary piston internal combustion engine