Average Co-Inventor Count = 1.83
ph-index = 8
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. Pullman Incorporated (7 from 228 patents)
2. Other (3 from 832,812 patents)
3. Richmond Tank Car Company (1 from 3 patents)
11 patents:
1. 6241415 - Adjustable and reusable handle for containers
2. 4411371 - Hatch cover locking mechanism
3. 4407203 - Railroad tank car lift lug
4. 4362111 - Covered hopper car
5. 4252067 - Side wall for railway hopper car
6. 4250814 - Dual hopper car doors
7. 4245565 - Cambered hatch cover seal arrangement
8. 4224877 - Railway hopper car closure actuating mechanism
9. 4130068 - Center filler for railway cars
10. 4057020 - Cam operated hatch cover holddown
11. 4046082 - Trough hatch locking device