US PATENT SUBCLASS 502 / 53
.~.~ Elemental hydrogen

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

20  DF  REGENERATING OR REHABILITATING CATALYST OR SORBENT {4}
34  DF  .~ Gas or vapor treating {5}
53.~.~ Elemental hydrogen

DEFINITION

Classification: 502/53

Elemental hydrogen:

(under subclass 34) Process in which the treating fluid includes free element number one.