Average Co-Inventor Count = 2.25
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. Ernst Leitz Wetzlar Gmbh (3 from 168 patents)
3 patents:
1. 4871290 - Automatic handling apparatus for plate-shaped objects
2. 4695215 - Device for automatically transporting disk shaped objects
3. 4501527 - Device for automatically transporting disk shaped objects