US PATENT SUBCLASS 60 / 301
.~.~.~ Reducing type catalyst

Current as of: June, 1999
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60 /   HD   POWER PLANTS

272  DF  INTERNAL COMBUSTION ENGINE WITH TREATMENT OR HANDLING OF EXHAUST GAS {18}
282  DF  .~ By means producing a chemical reaction of a component of the exhaust gas {13}
299  DF  .~.~ Using a catalyst {3}
301.~.~.~ Reducing type catalyst

DEFINITION

Classification: 60/301

(under subclass 299) Apparatus in which the reaction assisted by the catalyst is of the reduction type, i.e., the removal of oxygen from the substance being treated.