Average Co-Inventor Count = 7.46
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. Synphar Laboratories, Inc. (3 from 21 patents)
2. Taiho Pharmaceutical Company Limited (2 from 318 patents)
3. Syphar Laboratories, Inc. (1 from 1 patent)
4 patents:
1. 5994340 - Azetidinone derivatives as .beta.-lactamase inhibitors
2. 5888998 - 2-oxo-1-azetidine sulfonic acid derivatives as potent .beta.-lactamase
3. 5686441 - Penam sulfones as .beta.-lactamase inhibitors
4. 5439904 - 2-spiro(2'-spirocycloalkyl)cyclopropyl cephalosporin sulfones as