Average Co-Inventor Count = 2.57
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. Paul Wurth S.a. (3 from 309 patents)
3 patents:
1. 4822229 - Installation for charging a shaft furnace
2. 4820105 - Apparatus for charging a shaft furnace
3. 4755095 - Device for closing a top central opening of a vessel and its application