Average Co-Inventor Count = 5.46
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. Japan Tobacco Inc. (2 from 1,037 patents)
2. Yoshitomi Pharmaceutical Industries, Ltd. (1 from 198 patents)
2 patents:
1. 5214056 - 1,3,2-dioxathiolane oxide derivative
2. 5118811 - Amino acid derivatives possessing prolyl endopeptidase-inhibitory