Average Co-Inventor Count = 1.25
ph-index = 18
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. Nifco Inc. (31 from 1,193 patents)
2. Nissan Motor Company Limited (3 from 13,398 patents)
3. Yamakawa Industry Company Ltd. (2 from 3 patents)
31 patents:
1. 4893850 - Opening/closing device
2. 4776486 - Device for holding automobile fuel-tank filler port cap
3. 4774981 - Check valve
4. 4743370 - Filter for fuel tank
5. 4708895 - Plastic fastener
6. 4705190 - Device for holding automobile fuel-tank filler port cap
7. 4701064 - Ball joint
8. 4691623 - Ventilator device for vehicle
9. 4684463 - Filter device for in-tank type fuel pump for vehicle
10. 4679958 - Ball joint
11. 4653616 - Damper
12. 4644614 - Plastic fastener for spacing and supporting two plates
13. 4629167 - Piston cylinder type damper
14. 4618422 - Filter device for a fuel tank
15. 4568216 - Ball joint