Average Co-Inventor Count = 3.00
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. Leybold Aktiengesellschaft (3 from 393 patents)
3 patents:
1. 5069603 - Bearings for use in negative-pressure environments
2. 5028219 - Bearings for use in negative-pressure environments
3. 4978276 - Pump stage for a high-vacuum pump