Average Co-Inventor Count = 2.99
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. Portec Rail Products, Inc. (5 from 29 patents)
2. Koppers Delaware, Inc. (3 from 17 patents)
3. Other (2 from 832,718 patents)
4. Portec - Rmp Division (1 from 4 patents)
5. Protec Rail Products, Inc. (1 from 1 patent)
12 patents:
1. 11041274 - Center supported bond joint
2. 8302878 - Method and arrangement to insulate rail ends
3. 8123144 - Rail joint bars and rail joint assemblies
4. 7975933 - Method and arrangement to insulate rail ends
5. 7490781 - Rail joint bars and rail joint assemblies
6. D576023 - Center supported bond joint
7. 7261244 - Tie plate
8. D547642 - Wrap-around joint bar sleeve insulator
9. 7097112 - Profiled bar
10. 7090143 - Rail joint bars and rail joint assemblies
11. 5503331 - Insulated rail joint incorporating spacer-impregnated adhesive and
12. 4813433 - Syringe for withdrawing blood