US PATENT SUBCLASS 264 / 420-- .~.~.~.~ Microwave (e.g., 2.45 gigahertz, etc.)

US PATENT SUBCLASS 264 / 420
.~.~.~.~ Microwave (e.g., 2.45 gigahertz, etc.)

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	DF	.~.~ Including in situ (e.g., foaming) {3}
419	DF	.~.~.~ Using chemical blowing agent {2}
420		.~.~.~.~ Microwave (e.g., 2.45 gigahertz, etc.)

DEFINITION

Classification: 264/420

Microwave (e.g., 2.45 gigahertz, etc.):

(under subclass 419) Processes in which the directly applied energy is identified on the electromagnetic wave spectrum as existing between far infrared and conventional radio frequency.

(1) Note. A microwave is generally considered to be an electromagnetic wave which has a wavelength measured in the centimeter range. Microwaves occupy a region in the electromagnetic wave spectrum between infrared and radio-frequency. There are no distinct boundaries between these regions except by arbitrary definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

432, for processes of treating inorganic material utilizing microwave energy.

474, for extrusion molding processes utilizing microwave energy.

489, for processes wherein the energy directly applied is microwave.