US PATENT SUBCLASS 430 / 523
.~ Identified backing or protective layer containing

Current as of: June, 1999
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430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

495.1  DF  RADIATION SENSITIVE PRODUCT {7}
523.~ Identified backing or protective layer containing {5}
524  DF  .~.~> Metal {2}
527  DF  .~.~> Antistatic agent containing {3}
531  DF  .~.~> Synthetic resin or cellulose derivative containing {3}
538  DF  .~.~> Fibrous, e.g., paper, textile, etc.
539  DF  .~.~> Gelatin other than radiation sensitive type

DEFINITION

Classification: 430/523

Identified backing or protective layer containing:

(under subclass 495.1) Subject matter having a layer which is identified in a claim by its chemical constitution in addition to a radiation-sensitive layer. The chemically identified layer must either be on the side of a radiation-sensitive layer opposite the incidence of radiation, or overlie the radiation-sensitive layer to protect it from damage.

(1) Note. Any identification by chemical constitution is sufficient, e.g., resin, synthetic resin, paper, etc. Mere functional identification, e.g., base, support, etc., will not cause placement in this or indented subclasses.

(2) Note. Patents are placed in the indented subclasses hereunder in the first subclass providing for any base or support layer. If none of the identified base or support layers are provided for in the indented subclasses, the patent is placed in this subclass. In classifying in this and indented subclasses only identified layers as set forth in (1) Note will be considered, except that a functionally defined layer between two identified layers will be considered identified by disclosure for purposes of identification.

(3) Note. A lubricant layer which smooths the passage of the product through the apparatus is included as a protective layer.

(4) Note. In the case of a product used in a reflex process, all nonradiation-sensitive layers will be considered support or backing layers.