Average Co-Inventor Count = 2.76
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. Bayer Aktiengesellschaft (2 from 12,158 patents)
2. Feldmuhle Aktiengesellschaft (1 from 51 patents)
3. Sinterstahl Gmbh (1 from 6 patents)
4 patents:
1. 5143192 - Friction clutch or friction brake
2. 4618049 - Friction partners for lubricated friction couplings
3. 4499000 - Power-transmission method uses spirocyclic ketals
4. 4481123 - Polyethers, their preparation and their use as lubricants