US PATENT SUBCLASS 427 / 522
.~.~ Resistance or induction heat-initiated polymerization

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}
487  DF  .~ Polymerization of coating utilizing direct application of electrical, magnetic, wave, or particulate energy (i.e., including cross-linking, curing, and hardening of organics) {8}
522.~.~ Resistance or induction heat-initiated polymerization

DEFINITION

Classification: 427/522

Resistance or induction heat-initiated polymerization:

(under subclass 487) Processes wherein the polymerization step involving the applied coating is effected by using the applied coating or the substrate as the electrical energy conductor as in resistance or inductance heating, such that a current flows there through.

(1) Note. This subclass does not include processes wherein the electric current is passed through a heating filament, coil, susceptor, etc., which is not the substrate.

(2) 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 causes the conductive body to heat up.

(3) Note. Processes wherein an electrical discharge is caused to pass through a coated substrate to initiate polymerization are found here and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

540, wherein an arc or electrical discharge is produced in resistance heating to pretreat a substrate or post-treat a coated substrate.

SEE OR SEARCH CLASS

219, Electric Heating, 73.11, 73.21, and 76.1+ for metal coating buildup with the use of resistance heating. Electric welding, has to have two preforms being joined, wherein coating is ancillary to the joining of the preforms.