Average Co-Inventor Count = 4.00
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. Laroche Navarron S.a. (3 from 5 patents)
3 patents:
1. 4400381 - Piperazine derivatives of theophylline
2. 4374837 - Piperazine derivatives of theobromine
3. 4374835 - Piperazine derivatives of theophylline