US PATENT SUBCLASS 427 / 249.2
.~.~ 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}
249.1  DF  .~ Carbon or carbide coating {8}
249.2.~.~ Chemical vapor infiltration (i.e., CVI) of porous base (e.g., fiber, fibrous web, etc.)

DEFINITION

Classification: 427/249.2

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

(under subclass 249.1) 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 porous substrate.