Average Co-Inventor Count = 2.67
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. Yamaha Jet Boat Manufacturing U.s.a., Inc. (2 from 2 patents)
2. Yamaha Hatsudoki Kabushiki Kaisha (1 from 4,233 patents)
3. Yamaha Motor Corporation, USA (1 from 21 patents)
2 patents:
1. 9714075 - Jet boat including articulating keel
2. 9079638 - Storage system for a watercraft