Average Co-Inventor Count = 1.33
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. Schering Corporation (1 from 1,829 patents)
2. Key Pharmaceuticals, Inc. (1 from 54 patents)
2 patents:
1. 4755386 - Buccal formulation
2. 4587118 - Dry sustained release theophylline oral formulation