Average Co-Inventor Count = 1.89
ph-index = 5
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. Daifuku Co., Ltd. (5 from 708 patents)
2. Daifuku Ltd. (1 from 1 patent)
6 patents:
1. 6919008 - Conveyance apparatus for use with carriages
2. 6749055 - Car type conveyor
3. D356418 - Upright guide post for a lifting carriage
4. 5363770 - Drive unit for transport trolley having plastic center link and drive
5. 5303656 - Monorail tramcar type conveyor
6. 5284226 - Carriage guiding post in a transfer lifter