Page 16 - Methods For Monitoring And Diagnosing The Efficiency Of Catalytic Converters A Patent - oriented Survey

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Note on Cited Patent Documents

An international two-letter country code is used for published patents and patent applications
i. e.

AU Australia
BR Brazil
CA Canada
CH Switzerland
CN China
cz Czechoslovakia
DD Deutsche Demokratische Republiek (DDR)
DE Germany (Federal Republic)
DK Denmark
ES Spain
EP European (EPO)
FR France
GB Great Britain
IT Italy
JP Japan
KR Korea
NL The Netherlands
NO Norway
RU Russia
SE Sweden
su Soviet Union
us United States of America
wo World Intellectual Property Organization (WIPO)

The country code is followed by a one-letter publication code, i.e.

First Publication Level
Second Publication Level
Granted Patent for DE documents
Reissue Patent
Translated
Utility Model