Average Co-Inventor Count = 2.40
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. Olympus Optical Company, Ltd. (1 from 5,729 patents)
2. Duskin Franchise Co. Ltd. (1 from 15 patents)
2 patents:
1. 4444891 - Method for testing toxicity of chemical substance by using nematode
2. 4270838 - Micromanipulator for a microscope