US PATENT SUBCLASS 428 / 497
.~ Of natural gum, rosin, natural oil or lac


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

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
497.~ Of natural gum, rosin, natural oil or lac {1}
498  DF  .~.~> Next to cellulosic {1}


DEFINITION

Classification: 428/497

(under subclass 411.1) Product in which at least one layer contains a (natural gum or oil, rosin or lac*).

(1) Note. A patent which claims a laminate comprising a layer of, or containing, mineral oil, shellac, oil based paint, gum arabic, cottonseed oil etc., will be placed here.

(2) Note. Modification of a natural drying oil, e.g., boiled linseed oil, will be considered natural oil.

(3) Note. Pyroxylin* has a minor amount of camphor and/or castor oil as a plasticizer, but for purposes of classification in this schedule is considered a cellulosic* material. Thus, patents claiming a laminate of pyroxylin will be placed in appropriate subclasses of this class based upon the presence of a cellulosic layer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

205, for a composite web or sheet in which a translucent layer of natural gum, lac, rosin or oil covers a layer which is discontinuous in extent.

440, 456 and 467, for natural gum, rosin, natural oil or lac as a layer or associated with glass, cork or metal, respectively.

484+, for a product comprising a layer comprising wax* or waxy* material combined with a natural gum, rosin, natural oil or lac; many of the products in subclasses 484+, especially subclasses 485+ combine a wax and a gum, lac, rosin etc., as a coating on a cellulosic base.

SEE OR SEARCH CLASS

442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.),

84, 90, 100, and 159 for a coated or impregnated fabric that contains natural oil, gum, or rosin.