US PATENT SUBCLASS 252 / 567
DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET


Current as of: June, 1999
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567DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET


DEFINITION

Classification: 252/567

DEFINED LIQUID DIELECTRIC DISPERSED IN DEFINED WEB OR SHEET:

(under the class definition) Subject matter wherein a self-sustaining web or sheet, defined in terms of its composition, has distributed therein a material, liquid at ambient temperatures, which also is claimed in terms of its composition and which has indicated electric insulating properties.

(1) Note. According to current PTO practice, a single-layer web or sheet uniformly impregnated or swelled with another material is considered to be a composition, rather than a stock material.

(2) Note. The composition of the web or sheet itself must

be claimed in terms which indicate the presence of at least one periodic-table group or atom other than carbon. Such terms as "cellulosic", "silicic", "halogen", etc., are sufficiently definite as to composition of the web or sheet to be classified in this subclass (567). When the web or sheet is identified only in broad, functional, or property terms such as "substrate", "fibrous", "plastic", "porous", "organic", "metallic", "dielectric", etc., and the liquid component is described in terms of its composition and is either claimed or disclosed as having such property as its sole utility, classification is not proper herein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

570+, for a fluent dielectric composition, per se, and for situations wherein the web or sheet is identified only in broad, functional, or property terms such as "substrate", "fibrous", "plastic", "porous", "organic", "metallic", "dielectric", etc., and the liquid composition is described in terms of its composition and is either claimed or disclosed as having such property as its sole utility, see the notes thereto for the location of other electrically insulating compositions.

SEE OR SEARCH CLASS

106, Compositions: Coating and Plastic, appropriate subclasses for nonresinous plastic web or sheet impregnated with a solid dielectric or liquid dielectric impregnant which is not claimed in terms of its composition or which is not claimed or solely disclosed as a dielectric. 162, Paper Making and Fiber Liberation,

103+, and 123+ for multilayer materials, including a layer of paper, which may be impregnated with another material; subclasses 135+ for a single layer of paper which may contain a solid dielectric impregnant or a liquid dielectric impregnant which is not claimed in terms of its composition or which is not claimed or solely disclosed as a dielectric; and subclass 138 for a paper layer having an electrical characteristic.

427, Coating Processes, appropriate subclasses for a method of impregnating.

428, Stock Material or Miscellaneous Articles,

260+, for fabric impregnated with a solid dielectric or a liquid dielectric impregnant which is not claimed in terms of its composition or which is not claimed or solely disclosed as a dielectric; and subclasses 411+ for a multilayer material which may have electric insulating properties.

521, Synthetic Resins or Natural Rubbers,

53+, for a preformed porous or cellular synthetic resin

impregnated with a solid dielectric or a liquid dielectric impregnant which is not claimed in terms of its composition or which is not claimed or solely disclosed as a dielectric.