Average Co-Inventor Count = 6.63
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. Metallgesellschaft Aktiengesellschaft (3 from 642 patents)
2. Jean Hiedemann Gmbh & Co. Kg (1 from 1 patent)
3. Kolbenschmidt (1 from 1 patent)
3 patents:
1. 5114326 - Apparatus for manufacturing diaphragms
2. 5010050 - Process of producing composite material consisting of sheet metal
3. 4961901 - Process and apparatus for manufacturing diaphragms