Arka Prabha Roy

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Composite rail joint end post
- Patent number 11,639,584
- Issue date May 2, 2023
- L B Foster Company
- Arka Prabha Roy
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Direct fixation fastener
- Patent number 10,753,047
- Issue date Aug 25, 2020
- L.B. Foster Company
- Robert L. Alsop
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Direct fixation fastener
- Patent number D828397
- Issue date Sep 11, 2018
- L.B. Foster Company
- Robert L. Alsop
- D15 - Machines not elsewhere specified

Patents Applicationslast 30 patents

Information Patent Application
COMPOSITE RAIL JOINT END POST
- Publication number 20190085513
- Publication date Mar 21, 2019
- L.B. Foster Company
- Arka Prabha Roy
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
DIRECT FIXATION FASTENER
- Publication number 20180016754
- Publication date Jan 18, 2018
- L.B. Foster Company
- Robert L. Alsop
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES