Average Co-Inventor Count = 2.27
ph-index = 17
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. Zeftek, Inc. (25 from 41 patents)
2. Standard Car Truck Company (24 from 114 patents)
3. Other (2 from 832,966 patents)
4. Transportation IP Holdings, LLC (1 from 548 patents)
5. Schaefer Equipment, Inc. (1 from 6 patents)
6. Zeftec (1 from 1 patent)
54 patents:
1. 11585131 - Lubricant-free vehicle door lock
2. 11046108 - Paint roller cleaning system
3. 10421468 - Railroad car roller bearing adapter assembly
4. D852716 - Autorack railroad car chock body
5. 10308160 - Auto-rack railroad car vehicle restraint apparatus
6. 10252732 - Auto-rack railroad car vehicle restraint apparatus
7. D807807 - Autorack railroad car chock body
8. 9863172 - Railroad car lubricant free door lock
9. 9718483 - Auto-rack railroad car vehicle restraint apparatus
10. 9592760 - Auto-rack railroad car vehicle wheel chock
11. D780628 - Auto rack railroad car restraint end cap
12. D772105 - Auto rack railroad car restraint clip
13. 9469235 - Auto-rack railroad car vehicle restraint apparatus
14. 9365221 - Universal brake beam strut
15. 9321389 - Auto-rack railroad car vehicle restraint apparatus