Donald A. Bielski

Follow

Person

Youngstown, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Rail joint assembly having forged rail joint bars
- Patent number 10,961,665
- Issue date Mar 30, 2021
- Koppers Delaware, Inc.
- Steven D. Singleton
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Anti-rail rollover device
- Patent number D885977
- Issue date Jun 2, 2020
- Koppers Delaware, Inc.
- Steven D. Singleton
- D12 - Transportation

Patents Applicationslast 30 patents

Information Patent Application
Rail Brace Assembly
- Publication number 20240167231
- Publication date May 23, 2024
- KOPPERS DELAWARE, INC.
- Steven D. Singleton
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
Rail Joint Assembly having Forged Rail Joint Bars
- Publication number 20190127923
- Publication date May 2, 2019
- KOPPERS DELAWARE, INC.
- Steven D. Singleton
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES