Average Co-Inventor Count = 7.00
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. Westinghouse Air Brake Company (8 from 582 patents)
8 patents:
1. 5738416 - Railway braking apparatus to effect a change in a handbrake
2. 5701974 - Railway hand brake apparatus with visual condition indicator
3. 5593214 - Railway parking braking apparatus
4. 5586812 - Railway braking apparatus
5. 5558410 - Railway braking apparatus
6. 5558411 - Railway braking apparatus
7. 5558412 - Railway braking apparatus
8. 5549363 - Railway braking apparatus