Current as of: June, 1999
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377  DF  .~> With measuring, controlling, sensing, programming, timing, indicating, or testing {6}
385  DF  .~> Process of manufacturing optical fibers, waveguides, or preforms thereof {29}
436  DF  .~> Plasma utilized
437  DF  .~> Producing noncircular fibers (e.g., particular cross section, flat, elliptical, etc.)
438  DF  .~> Producing crimped, twisted, or curled fibers (e.g., textured, etc.)
439  DF  .~> Producing hollow fibers or tubular preforms
440  DF  .~> Sol-gel route or ion exchange utilized
441  DF  .~> Electromagnetic, magnetic, wave, or particulate energy utilized
442  DF  .~> Composite fiber matrix (e.g., carbon or metal fiber with glass matrix or vice versa, etc.)
443  DF  .~> With coating (e.g., lubricant, sizing, etc.) {5}
454  DF  .~> Formation of fiber or preform utilizing fluid blast (e.g., from molten glass, etc.) {6}
469  DF  .~> By slinging or rotary-centrifugal fiber distribution (i.e., without fluid blast) {1}
471  DF  .~> With bushing flood prevention, removal, or breakout prevention
472  DF  .~> With chemical etching or leaching
473  DF  .~> With removal of coating (e.g., desizing, oxidizing coating, etc.)
474  DF  .~> With purifying or homogenizing molten glass (e.g., removing bubbles, etc.)
475  DF  .~> With fiber drawing or pulling (e.g., attenuating, etc.) {6}
482  DF  .~> With charging or pretreatment of batch material (e.g., gas heating, crushing, etc.)


Classification: 65/376


(under the class definition) Processes directed to producing (a) rodlike stock of sufficiently small diameter, either as (i) continuous filaments of indefinite length, or (ii) short discrete pieces, or (b) stock material intended to be used in fiber and filament making.

(1) Note. For the purposes of this class "mineral wool" is wool formed from slag.

(2) Note. Fiber and filament treating combined with a step of making stock material intended to be used in fiber and filament making are included herein.


28, Textiles: Manufacturing,

103, 172.1, 178, 190, 217, and 247 for processes and apparatus involving mechanical interengaging of fibers or strands not combined with a glassworking or glass treating operation.

73, Measuring and Testing, 159, for measuring and testing of a fiber, per se.

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

62.4, for processes for adhesively laminating plural preforms which include the step of liberating or forming glass fibers with bulk deposition thereof to form at least one of the preforms. See subclasses 167 and 433+ for a process or apparatus for forming glass filaments combined with the steps of applying an adhesive to the filaments and assembling them to form a strand (a patent which discloses but does not claim the assembly operation above is classified in Class 65 even though the sole disclosure relates to the formation of a strand composed of bonded filaments). A patent claiming the steps of applying a coating material to glass filaments and assembling the coated filaments and having a specification disclosing several coating materials one of which is not an adhesive is classified in Class 65 unless a claim recites an adhesive coating material, in which case the patent is classified in Class 156; and see subclasses 2+ and 345 for etching of glass fibers or filaments, per se.

162, Paper Making and Fiber Liberation, appropriate subclasses, especially

3, and 100+ for chemical liberation of fibers and felting in paper manufacturing.

204, Chemistry: Electrical and Wave Energy,

192.29, for forming a transparent optical conductor by sputtering; follow the general guidelines for placement of an operation involving the combination of at least one Class 204 step in sequence with a separate Class 65 step as explained at the beginning of the Class 204 definition under I, (4) and (5) Notes.

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,

687+, for electrolytic material treatment, especially subclass 769 for electrolytic treatment of solid glass, silica, quartz, or optical material.

241, Solid Material Comminution or Disintegration, appropriate subclasses for comminution of solid materials of

general application.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, for shaping, molding, or casting of nonmetallic materials other than glass, especially 1.24+, for shaping, treating, or extruding optical fibers, subclasses 5+ for processes, within the class definition, of liquid comminuting and solidifying of general application, and subclasses 165+ for processes of forming indefinite-length fibers or filaments from materials which may be disclosed to be siliceous materials in solution or suspension by precipitation in a reactive or solvent extractive bath or by evaporation of the solvent.

425, Plastic Article or Earthenware Shaping or Treating: Processes, for molding, casting, or shaping plastic, ceramic, or nonmetallic material (excluding glass, Class 65),

6+, for liquid comminuting means forming particulate material (e.g., granules, fibers, etc.) directly from molten material including means providing a solidifying zone, subclass 66 for filament forming means combined with product advancing means, subclasses 67+ for apparatus comprising a filament shaping orifice discharging into a liquid bath or shower, subclasses 80.1+ for molding apparatus including air-felting means for forming self-sustaining bodies from particulate material, and for processes directed to the formation of filaments from siliceous materials in solution (e.g., silicates by precipitation from said solution or evaporation of solvent therefrom, etc.).