Average Co-Inventor Count = 2.67
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. Sumitomo Metal Industries, Inc. (4 from 929 patents)
2. Ishikawajima-harima Jukogyo Kabushiki Kaisha (2 from 306 patents)
4 patents:
1. 4545786 - Apparatus for gasifying solid carbonaceous materials
2. 4459137 - Gasification of solid carbonaceous materials
3. 4373883 - Apparatus for producing granules from molten metallurgical slags
4. 4358415 - Method for producing granules from molten metallurgical slags