Average Co-Inventor Count = 7.00
ph-index = 1
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. Metallgesellschaft Aktiengesellschaft (2 from 642 patents)
2. Jean Hiedemann Gmbh & Co. Kg (1 from 1 patent)
3. Kolbenschmidt (1 from 1 patent)
2 patents:
1. 5114326 - Apparatus for manufacturing diaphragms
2. 4961901 - Process and apparatus for manufacturing diaphragms