US PATENT SUBCLASS 428 / 34.6
.~.~ Multilayer (continuous layer)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

34.1  DF  HOLLOW OR CONTAINER TYPE ARTICLE (E.G., TUBE, VASE, ETC.) {7}
34.4  DF  .~ Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing (e.g., porcelain, brick, cement, etc.) {2}
34.6.~.~ Multilayer (continuous layer) {1}
34.7  DF  .~.~.~> Polymer or resin containing (i.e., natural or synthetic)

DEFINITION

Classification: 428/34.6

Multilayer (continuous layer):

(under subclass 34.4) Article* which has two or more distinct layers.

(1) Note. This subclass does not include as "multilayer", discontinuous layers (i.e., designs on a vase or nonwraparound label on a container), slightly overlapping single sheet or film, or a coating on the seam, edge, or rim only of a tubular article or container. A glass container with a sleeve around a segment of or around the whole container can be found in this subclass. An impregnated single-layered article is considered multilayered only if the depth of impregnation is defined (see the class definition, Glossary, "Web" Note (2)). See subclass 34.4 for placement of articles not meeting the definition requirements of this subclass as stated herewith.

(2) Note. If unable to determine whether the article is single or multilayered from the claims or the specification, place the original classification in the first appropriate subclass which will take either single or multilayers and generally cross to the specific subclass for single layer or multilayer, whichever is available.