Average Co-Inventor Count = 2.86
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. Quarzwerke Gmbh (1 from 5 patents)
2. 'Rhewum' Rheinische Werkzeug- Und Maschinenfabrik Gmbh (1 from 3 patents)
3. Rhewum Gmbh (1 from 1 patent)
2 patents:
1. 5059310 - Analytical sieve apparatus
2. 4575420 - Beater-type power sieve with full spring mounting