US PATENT SUBCLASS 427 / 255.12
.~.~ Chemical vapor infiltration (i.e., CVI) of porous base (e.g., fiber, fibrous web, etc.)

Current as of: June, 1999
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427 /   HD   COATING PROCESSES

248.1  DF  COATING BY VAPOR, GAS, OR SMOKE {9}
255.11  DF  .~ Base includes an inorganic compound containing silicon or metal (e.g., glass, ceramic, brick, etc.) {7}
255.12.~.~ Chemical vapor infiltration (i.e., CVI) of porous base (e.g., fiber, fibrous web, etc.)

DEFINITION

Classification: 427/255.12

Chemical vapor infiltration (i.e., CVI) of porous substrate (e.g., fiber, fibrous web, etc.):

(under subclass 255.11) Process in which chemical reactants in vapor phase penetrate a porous substrate (e.g. fiber, fibrous web, etc.) wherein a vapor phase reaction subsequently occurs to form a coating that deposits in said substrate.