Average Co-Inventor Count = 4.86
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. Didier-werke Ag (2 from 203 patents)
2. Mannesmann Aktiengesellschaft (1 from 1,150 patents)
3 patents:
1. 5958280 - Immersion nozzle for pouring molten metal (joint point)
2. 5942316 - Multi-layer refractory wear body
3. 5183624 - Shutoff assembly and improved drive rod therefor