Inventor · disambiguated record
Warren S. Letzsch
Also filed as: LETZSCH WARREN · LETZSCH WARREN S · LETZSCH WARREN STEWART
8 granted patents·3 pending applications·180 citations·filing 1981–2011
89Inventor score
Top patents by PatentIndex Score
11 records- 0194US7479218B2Deep catalytic cracking processSTONE & WEBSTER PROCESS TECH·Filed 2005·Granted Jan 20, 2009·29 cites·1 claims
- 0285US4415438AMethod for catalytically converting residual oilsDEAN ROBERT R·Filed 1981·Granted Nov 15, 1983·41 cites·17 claims
- 0382US7429363B2Riser termination deviceSTONE & WEBSTER PROCESS TECH·Filed 2005·Granted Sep 30, 2008·15 cites·18 claims
- 0476US6905591B2Deep catalytic cracking processSTONE & WEBSTER PROCESS TECH·Filed 2003·Granted Jun 14, 2005·12 cites·11 claims
- 0573US5662868AShort residence time cracking apparatus and processSTONE & WEBSTER ENG CORP·Filed 1994·Granted Sep 2, 1997·32 cites·19 claims
- 0670US5723040AFluid catalytic cracking process and apparatusSTONE & WEBSTER ENG CORP·Filed 1994·Granted Mar 3, 1998·25 cites·11 claims
- 0768US7273543B2Process and apparatus for controlling catalyst temperature in a catalyst stripperSTONE & WEBSTER PROCESS TECH·Filed 2003·Granted Sep 25, 2007·9 cites·23 claims
- 0851US5766558AFluid catalytic cracking process and apparatusSTONE & WEBSTER ENG CORP·Filed 1996·Granted Jun 16, 1998·17 cites·14 claims
- 0946US2009269252A1Operation of catalyst withdrawal wells with packingSTONE & WEBSTER PROCESS TECH·Filed 2008·Application pending·0 cites
- 1044US2003127358A1Deep catalytic cracking processFiled 2002·Application pending·0 cites
- 1140US2013130889A1Process for maximum distillate production from fluid catalytic cracking units (fccu)GBORDZOE EUSEBIUS·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →