Average Co-Inventor Count = 1.30
ph-index = 13
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. Amsted Industries Inc. (26 from 317 patents)
2. Other (1 from 832,718 patents)
3. Canon Kabushiki Kaisha (1 from 90,631 patents)
4. Sharma & Associates, Inc. (1 from 6 patents)
5. Trailer Train (1 from 3 patents)
29 patents:
1. 6290079 - Coupler for railroad cars
2. 5285911 - Coupler knuckle pin protector structure and stress reliever
3. 5080242 - Slackless railcar connections with upward wear indicator
4. 5054630 - Slackless coupler connection for a railway vehicle
5. 5035338 - Slackless railcar connections with extractable wedge
6. 5000330 - Railway vehicle rotary drawbar arrangement
7. 4984696 - Railway coupler head strengthened at horn line
8. 4977835 - Body bolster center plate assembly
9. 4976363 - Knuckle pin retainer for railway vehicle coupler
10. 4871182 - Fifth wheel unlocking and safety latch device
11. 4863045 - Rotary railway drawbar coupler
12. 4776474 - Railroad car coupler arrangement limiting excess lateral movement of the
13. 4762334 - Fifth wheel bracket mounting assembly
14. 4700853 - Slackless railway coupler connection
15. 4605133 - Coupler knuckle