Assignee
KOPPERS DELAWARE INC
US·12 granted patents·5 pending applications·14 citations·filing 2002–2024
Top patents by PatentIndex Score
17 records- 0183US9328464B2Single bend railKOPPERS DELAWARE INC·Filed 2013·Granted May 3, 2016·3 cites·22 claims
- 0283US7465387B2Coal tar and hydrocarbon mixture pitch and the preparation and use thereofKOPPERS DELAWARE INC·Filed 2006·Granted Dec 16, 2008·5 cites·1 claims
- 0378US2025092315A1Heat treatment product by process for increased pitch yieldsKOPPERS DELAWARE INC·Filed 2024·Application pending·0 cites
- 0474US2023272285A1Heat treatment product by process for increased pitch yieldsKOPPERS DELAWARE INC·Filed 2023·Application pending·0 cites
- 0571US8042747B2Notched tie plate insulatorKOPPERS DELAWARE INC·Filed 2008·Granted Oct 25, 2011·3 cites·17 claims
- 0669US11624029B2Heat treatment process for increased pitch yieldsKOPPERS DELAWARE INC·Filed 2021·Granted Apr 11, 2023·0 cites·31 claims
- 0765US12394787B2Dispersion of coal tar pitch for coating graphitic materials and use in Li-ion battery electrode productionKOPPERS DELAWARE INC·Filed 2022·Granted Aug 19, 2025·0 cites·40 claims
- 0865US11248172B2Heat treatment process and system for increased pitch yieldsKOPPERS DELAWARE INC·Filed 2019·Granted Feb 15, 2022·0 cites·27 claims
- 0962US12037750B2Gauge plate insulatorKOPPERS DELAWARE INC·Filed 2021·Granted Jul 16, 2024·0 cites·13 claims
- 1061US2018320323A1Gauge PlateKOPPERS DELAWARE INC·Filed 2018·Application pending·0 cites
- 1160US11041274B2Center supported bond jointKOPPERS DELAWARE INC·Filed 2017·Granted Jun 22, 2021·0 cites·6 claims
- 1257US7066997B2Coal tar and hydrocarbon mixture pitch and the preparation and use thereofKOPPERS DELAWARE INC·Filed 2002·Granted Jun 27, 2006·3 cites·4 claims
- 1354US11898101B2Method and apparatus for continuous production of mesophase pitchKOPPERS DELAWARE INC·Filed 2021·Granted Feb 13, 2024·0 cites·18 claims
- 1449US2023110305A1End Post Gap Fill AssemblyKOPPERS DELAWARE INC·Filed 2022·Application pending·0 cites
- 1547US2024167231A1Rail Brace AssemblyKOPPERS DELAWARE INC·Filed 2023·Application pending·0 cites
- 1646US10961665B2Rail joint assembly having forged rail joint barsKOPPERS DELAWARE INC·Filed 2018·Granted Mar 30, 2021·0 cites·22 claims
- 1724USD885977SAnti-rail rollover deviceKOPPERS DELAWARE INC·Filed 2017·Granted Jun 2, 2020·0 cites·1 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →