Current as of: June, 1999
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401  DF  .~> Cosmetic, antiperspirant, dentifrice
402  DF  .~> Wearing apparel, fabric, or cloth {2}
405  DF  .~> Biocides; animal or insect repellents or attractants (e.g., disinfectants, pesticides, etc.) {4}
422  DF  .~> Implant or insert {5}
438  DF  .~> Specially adapted for ruminant animal
439  DF  .~> Food or edible as carrier for pharmaceutical {3}
443  DF  .~> Web, sheet or filament bases; compositions of bandages; or dressings with incorporated medicaments {3}
450  DF  .~> Liposomes
451  DF  .~> Capsules (e.g., of gelatin, of chocolate, etc.) {6}
464  DF  .~> Tablets, lozenges, or pills {5}
484  DF  .~> Matrices {3}
489  DF  .~> Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) {5}


Classification: 424/400


(under the class definition) Subject matter which possess some form, or a specific dimension or configuration, or its components are associated as plural layers or parts.

(1) Note. A composition in unit form; e.g., tablet, capsule, etc., of specific structure is classified in this and indented subclasses. However, a composition claimed as an article (or product) and which is only defined in broad descriptive terms such as "pill", "tablet", "granule", "particle", "solid", etc., is classified in appropriate subclasses below on the basis of the composition thereof or other feature, since the recited descriptive terms, per se, are not regarded as defining "structure" for this and indented subclasses. However, this and indented subclasses will take products of special form having reference to nominal structure; e.g., "oval", "spherical", "rod", "tapering", "hollow", etc.

(2) Note. This class provides for impregnated or layered substrates which function as a carrier or applicator; e.g., textiles, bandages filament, paper, etc., having minimum of two layers, wherein one layer (or the impregnant) is a composition for this class and the substrate is no more than a nominally recited single layered base. Thus, this subclass will provide for an impregnant matrix.

(3) Note. An article coated, or impregnated with a composition provided for in this class and in which the composition functions only to preserve the article from biological attack is generally classified with the particular article protected. Seeds coated with Class 424 biocidal compositions are an exception to this rule and are classified in Class 504, subclass 100.


71, Chemistry: Fertilizers, provides for compositions having a nutrient action on plant growth and methods of using such compositions.

106, Compositions: Coating or Plastic, provides for coating compositions which protect a base by forming a tough adherent film even though the composition also contains a biocide of product the base against biological attack,; e.g., marine antifouling paints, etc. Materials or ingredients for coating and molding compositions (Class 106 appropriate subclasses) which are also useful as diluents or inert ingredients in pharmaceutical compositions are placed in Class 106 unless a therapeutic or biocidal property is claimed. Surgical sponges claimed only as being made from Class 106 if the sponge contains no active ingredient with a utility for Class 424. Patents claiming an ink suitable for coating or printing or pharmaceutical dosage units; e.g., tablets, etc., are placed in Class 106 unless the coated or printed article is also claimed. Class 424 provides for the following coating compositions: Compositions intended to decorate or beautify the body; e.g., hair lacquer, fingernail polish, lipstick, etc.; coating compositions which do not protect the base by forming a tough, adherent film and whose sole function is as a carrier for a composition of Class 424 utility; e.g., "stickers" which adhere insecticides to plants, etc., whether or not claimed in combination with an active ingredient; coating compositions applied to the body for therapeutic purposes even though a tough, adherent film is formed; and coating compositions which do not form tough, adherent films and which have a utility provided for in Class 424; e.g., salve, skin cream or a solution of a material, for example, a mixture of phenols to protect wood against insects, etc. 504, Plant Protecting and Regulating Compositions, provides for compositions having a stimulating, inhibiting (Herbicides), or regulating action on plant growth and methods of using such compositions. Class 504 specifically provides for algicidal compositions in

150+, and nutrient compositions which contain an insecticide, fungicide, or deodorant in subclasses 101+. Class 504 is superior to Class 424. If claims are drawn to a "pesticide" composition or method without specifically reciting the nature of the "pest" to be controlled or eradicated, the patent is placed as an original in Class 424 when only a Class 424 type of "pest" (e.g., fungi, insect, rodent, etc.)

is revealed in the patent disclosure. However, if both Class 504 and Class 424 types of "pest" are specifically disclosed or if no disclosure is made as to the specific type of pest, the patent is placed in Class 504 as an original and cross-referenced to Class 424.

D24, Medical and Laboratory Equipment,

100, 104 for design patents for pharmaceutical products.