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Richard A. Kretchmer
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Clarendon Hills, IL, US
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last 30 patents
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Patent Grant
Control of exhaust emissions from an internal combustion engine
Patent number
5,916,129
Issue date
Jun 29, 1999
BP Amoco Corporation
Frank S. Modica
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Control of exhaust emissions from an internal combustion engine
Patent number
5,687,565
Issue date
Nov 18, 1997
Amoco Corporation
Frank S. Modica
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Process for simultaneously removing nitrogen oxides, sulfur oxides,...
Patent number
4,692,318
Issue date
Sep 8, 1987
Amoco Corporation
Thomas W. Tolpin
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Nitrogen oxide, sulfur oxide, and particulate removal system
Patent number
4,617,175
Issue date
Oct 14, 1986
Standard Oil Company (Indiana)
Thomas W. Tolpin
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Removal of sulfur oxides and particulates with copper-containing ab...
Patent number
4,612,177
Issue date
Sep 16, 1986
Standard Oil Company (Indiana)
Richard A. Kretchmer
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for simultaneously removing nitrogen oxides, sulfur oxides,...
Patent number
4,609,537
Issue date
Sep 2, 1986
Standard Oil Company (Indiana)
Thomas W. Tolpin
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL