Average Co-Inventor Count = 3.69
ph-index = 4
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. Johnson Matthey Public Limited Company (4 from 834 patents)
4 patents:
1. 6365742 - Preparation of opiates, intermediates and uses of salts
2. 6090943 - Preparation of opiates, intermediates and uses of salts
3. 5981751 - Method for removal of residual organic solvents and use thereof in
4. 5847142 - Preparation of narcotic analgesics