US PATENT SUBCLASS 264 / 415
.~.~ Including in situ (e.g., foaming)

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

405  DF  DIRECT APPLICATION OF ELECTRICAL OR WAVE ENERGY TO WORK (E.G., ELECTROMAGNETIC WAVE, PARTICULATE, MAGNETIC, INDUCTION HEAT, SONIC, ELECTROSTATIC ENERGY, ETC.) {26}
413  DF  .~ Producing or treating porous product {5}
415.~.~ Including in situ (e.g., foaming) {3}
416  DF  .~.~.~> Using liquid to gas blowing agent {2}
419  DF  .~.~.~> Using chemical blowing agent {2}
422  DF  .~.~.~> Radio frequency (e.g., 13.56 megahertz, etc.)

DEFINITION

Classification: 264/415

Including in situ (e.g., foaming):

(under subclass 413) Processes wherein the pore containing article or material is produced by on site foaming.