Average Co-Inventor Count = 3.20
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. Tsubakimoto Chain Company (3 from 906 patents)
2. Arkray, Inc. (1 from 545 patents)
3. Sumitomo Life Welfare and Culture Foundation (1 from 1 patent)
4 patents:
1. 11281933 - Information processing device, measurement system, and non-transitory storage medium
2. 7901312 - Silent chain transmission device
3. 7546725 - Silent chain
4. 6969560 - Wear-resistant coating and silent chain coated with same