US PATENT SUBCLASS 106 / 762
.~.~.~.~.~ Processing of exhaust gas prior to recycling (e.g., purifying, separating constituents, etc.)

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
638  DF  .~ Inorganic settable ingredient containing {30}
713  DF  .~.~ Portland type cement {13}
739  DF  .~.~.~ Portland type cement per se (e.g., clinker preparation, etc.) {26}
761  DF  .~.~.~.~ Recycling exhaust gas, reusing heat from process, or purifying exhaust gas {1}
762.~.~.~.~.~ Processing of exhaust gas prior to recycling (e.g., purifying, separating constituents, etc.)

DEFINITION

Classification: 106/762

Processing of exhaust gas prior to recycling (e.g., purifying, separating constituents, etc.):

(under subclass 761) Subject matter involving special processing of exhaust gas, prior to recycling to prepare the gas for said recycling, e.g., purifying, separating constituents, etc.

(1) Note. Purifying to remove certain impurities is provided for in subclass 752 above.