US PATENT SUBCLASS 427 / 543
.~.~ Induction or dielectric heating

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

457  DF  DIRECT APPLICATION OF ELECTRICAL, MAGNETIC, WAVE, OR PARTICULATE ENERGY {15}
532  DF  .~ Pretreatment of substrate or post-treatment of coated substrate {9}
543.~.~ Induction or dielectric heating {1}
544  DF  .~.~.~> Organic coating containing material

DEFINITION

Classification: 427/543

Induction or dielectric heating:

(under subclass 532) Processes which utilize induction or dielectric heating in treating a substrate before it is coated or treating a coated substrate.

(1) Note. Induction heating involves subjecting a conductive body to a variable electromagnetic field, usually at a frequency lower than that used for dielectric heating. Internal resistance in the conductive body then cause the conductive body to heat up

(2) Note. Dielectric heating involves the method of raising the temperature of a nominally insulating material by sandwiching it between two plates to which an rf voltage is applied. The material acts as a dielectric and its internal resistance causes it to heat up.