Average Co-Inventor Count = 2.00
ph-index = 1
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. Pentax Corporation (1 from 1,056 patents)
2. Pentax Industrial Instruments Co., Ltd. (1 from 3 patents)
1 patent:
1. D576062 - Total station