Average Co-Inventor Count = 2.40
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. E.i. Dupont De Nemours and Company (4 from 16,338 patents)
4 patents:
1. 6855670 - Superconducting bismuth-strontium-calcium-copper oxide compositions and process for manufacture
2. 5219833 - Process for manufacturing single phase Tl.sub.2 Ba.sub.2 CuO.sub.6-x
3. 4929594 - Superconducting composition Tl.sub.2 Ba.sub.2 CuO.sub.6+x and process
4. 4835136 - Lanthanum: sodium copper superconducting metal oxide compositions and