CPC Definition - Subclass D02G
This place covers:
The post treatment of fibres and filaments (usually synthetic) to give them a structure more like natural fibres i.e. crimped or curled to make them easier to work with during further processing.
This place does not cover:
Yarns or threads, e.g. fancy yarns; Processes or apparatus for the productionthereof | |
Unwinding, paying-out, forwarding, winding or coilingfilamentary material not intimately associated with spinning or twisting | |
Cores, formers, supports or holders for coiled or wound material, e.g. bobbins | |
Mechanical methods or apparatus in the manufacture of artificial filaments, threads, fibres, bristles, or ribbons | |
Chemical features in the manufacture of artificial filaments, threads, fibres, bristles, or ribbons; apparatus specially adapted for the manufacture of carbon filaments | |
Twisting oakum | |
Spinning or twisting | |
Making chenille | |
General aspects of chemical treatment | |
Testing yarns, rovings, slivers, fibres, or fibre webs |
The "common rule" applies in each of the subgroups
In this place, the following terms or expressions are used with the meaning indicated:
Fibre | a relatively-short, elongated member of natural or artificial material. |
Filament | an endless or quasi-endless, elongated member of natural or artificial material. |
Yarn | a unitary assembly of fibres, usually produced by spinning. |
Thread | an assembly of yarns or filaments, usually produced by twisting. |
False twisting | synthetic filaments are twisted, heat set while twisted and then untwisted to form a crimp |
Texturing or texturizing | curling and crimping |
Stuffer box | a confined space where yarns or filaments are compressed and deformed |
This place covers:
Yarns or threads characterised by the material or by the materials from which they are made. These aspects are covered by D02G 3/02.
Yarns or threads characterised by constructional features. These aspects are covered by D02G 3/22.
Yarns or threads characterised by the purpose for which they are designed. These aspects are covered by D02G 3/44.
This place does not cover:
Shoe laces | |
Dental floss | |
Warp knitted yarns | |
Braided cords, lines or tows | |
Ropes and strands for ropes |
Attention is drawn to the following places, which may be of interest for search:
Wearing apparel | |
Selection of special materials for outerwear | |
Woven materials characterised by the material or construction of the yarn | |
Weft knitting processes characterised primarily by the use of particular thread materials | |
Warp knitting processes characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads |
In this main group, further classification in indexing scheme D10B for aspects relating to yarns is required.
The classification is desirably complemented by a classification in the indexing scheme D10B 2101/00 - D10B 2331/301 for identifying the thread composition.
This place covers:
Blended or other yarns or threads containing components including aramid fibres and similar high performance fibres.
In patent documents, the following words/expressions are often used with the meaning indicated:
"Aromatic polyamide" | "aramid". |
"Para aramid" | "terephthalamide (PPTA)". |
"Meta aramid" | "poly-metaphenylene isophthalamide (MPIA)". |
"Ultra high molecular weight polyethylene (UHMWPE)" | "poly(p-phenylene-2,6-benzobisoxazole". |
Attention is drawn to the following places, which may be of interest for search:
Woven fabrics characterised by using paper threads |
Attention is drawn to the following places, which may be of interest for search:
Gloves made of wire-mesh | |
Resistance heating devices in seats specially adapted for vehicles | |
Woven fabrics characterised by the warp or weft elements being of stiff material, e.g. wire |
Attention is drawn to the following places, which may be of interest for search:
Artificial filaments or the like of other substances, manufacture thereof, apparatus specially adapted for the manufacture of carbon filaments | |
Woven fabrics characterised by using threads comprising a mineral |
The classification is desirably complemented by a classification in the Indexing Codes D10B 2101/00 - D10B 2101/16 for identifying the thread composition.
Attention is drawn to the following places, which may be of interest for search:
Fibreglass strands extruded from spinnerets | |
Glass fibre or filament | |
Woven fabrics using glass fibres |
This place covers:
US-A-2004/0065072
US-A-2005/0009430
US-A-3 690 056
In this place, the following terms or expressions are used with the meaning indicated:
Doubled yarns | yarns consisting of two or more strands treated as one in the weaving process. The strands are not twisted together. The doubled yarn must not be confused with ply yarns, which are stronger because they are twisted. |
Plied or folded yarns | yarns comprising two or more strands or yarns twisted together. They are termed two-ply, three-ply, and so on, according to the number used in their construction. Ply yarns are preferred where durability is all-important. |
Cabled or cord yarns | yarns comprising two or more plied yarns twisted together. In general they are constructed by twisting the plied yarns around each other successively in the opposite direction of the preceding twist, i.e. S/Z/S or Z/S/Z. As a result, the opposite twist directions cause the plies to grip each other and maintain adherence. These yarns are hard, rough and strong. |
This place covers:
EP-A-0 038 143
This place covers:
EP-A-0 593 919
Attention is drawn to the following places, which may be of interest for search:
Multiple twist arrangements |
This place covers:
US-A-6 098 392
This place covers:
US-A-4 246 750
In this place, the following terms or expressions are used with the meaning indicated:
Self-twist yarn | yarn that comprises two or more strands that have areas of twist in what is known as the Z-direction and areas of twist in what is known as the S-direction. The twisted areas in the strands are each separated by non-twisted areas. Torque is trapped in the twisted strand and is otherwise known as residual twist. When two or more twisted strands are brought together, the torque or residual twist causes the strands to twist around each other naturally, without interference, to form a self twisted yarn. |
This place covers:
US-A-2 961 010
In this place, the following terms or expressions are used with the meaning indicated:
Crêped yarns or hard twist | yarns with a number of twist per unit of length higher than ordinary yarn. |
Attention is drawn to the following places, which may be of interest for search:
Woven fabrics using stretchable or elastic threads | |
Abrics or articles defined by weft knitting using elastic threads | |
Fabrics or articles defined by warp knitting incorporating elastic threads |
This place covers:
WO-A-2010/064647
This place covers:
US-A-4 304 092
FR-A-2 315 554
US-A-3 945 189
This place does not cover:
Filamentary material with threaded or stringed pearls or beads |
Attention is drawn to the following places, which may be of interest for search:
Woven fabrics characterised by using coloured threads | |
Passing of textile materials through liquids, gases or vapours to effect treatment of yarns, threads or filaments |
This place covers:
WO-A-01/98572
DE-U-202006008644
US-A-4 056 924
This place does not cover:
Cored yarns or threads with an elastic core and/or sheath |
This place covers:
CH-A-607 246
This place covers:
WO-A-2009037631
EP-A-1 964 952
WO-A-2009/131149
Attention is drawn to the following places, which may be of interest for search:
Modifying the surface of filaments, yarns or threads by treating with particulate, semi-solid, or solid substances |
This place covers:
Yarns or threads coated with polymeric solutions removable at a later stage. The polymeric solution can also be in the form of a yarn, e.g. twisted or blended with other components of the yarn.
Attention is drawn to the following places, which may be of interest for search:
Woven fabrics using scaffolding threads, i.e. threads removed after weaving |
This place covers:
EP-A-0 620 185
DE 3 445 138
Attention is drawn to the following places, which may be of interest for search:
Chenille fabrics | |
Chenille trimmings |
In this place, the following terms or expressions are used with the meaning indicated:
Chenille yarn | is manufactured by placing short lengths of yarn, called the "pile", between two core yarns and then twisting the yarn together. The edges of these piles then stand at right angles from the yarn's core, giving the chenille both its softness and its characteristic look. Chenille will look different in one direction compared to another, as the fibres catch the light differently. |
Attention is drawn to the following places, which may be of interest for search:
Professional, industrial or sporting protective garments | |
Selection of special materials for outerwear | |
Woven fabrics characterised by the material of the yarn | |
Fabrics or articles defined by weft knitting characterised by the thread material | |
Fabrics or articles defined by warp knitting characterised by the thread material |
Attention is drawn to the following places, which may be of interest for search:
Threads containing metallic filaments or strips | |
Special materials for outerwear against electric shocks or static electricity | |
Car seat heating | |
Antistatic fabrics | |
Flexible ohmic-resistance heating | |
Electromagnetic shielding materials comprising electro-conductive fibres |
Attention is drawn to the following places, which may be of interest for search:
Protective gloves resistant to mechanical aggressions, e.g. cutting, piercing | |
Special materials for outerwear resistant to mechanical aggressions, e.g. pierceproof materials |
Attention is drawn to the following places, which may be of interest for search:
Protective gloves with fire protection | |
Special materials for outerwear against fire and heat | |
Fire resistant clothes | |
Woven fabrics using heat-resistant or fireproof threads |
This place covers:
Yarns or threads for sport applications, including fishing lines and tennis racket strings made up of yarns.
Attention is drawn to the following places, which may be of interest for search:
Fishing lines | |
Strings for tennis rackets |
This place covers:
Yarns or threads for use in floor fabrics, e.g. carpets, floor mats, artificial lawn.
Attention is drawn to the following places, which may be of interest for search:
Woven carpets | |
Tufted carpets | |
Artificial grass |
Attention is drawn to the following places, which may be of interest for search:
Screen cloths and wire cloths in papermaking machines | |
Extile reinforcements in driving belts | |
Textile reinforcement in V-belts | |
Packing materials shaped as strands, ropes, threads, ribbons or the like |
Attention is drawn to the following places, which may be of interest for search:
Special materials for outerwear with antibacterial or antimicrobial materials | |
Filaments containing agents inhibiting growth of microorganisms |
This place covers:
Textile tyre cords and hybrid tyre cords.
This place does not cover:
Metal tyre cords |
Attention is drawn to the following places, which may be of interest for search:
Hybrid cords (i.e. comprising metal wires and filaments or yarns within the same rope or strand) have to be classified in both D02G 3/48 and D07B 1/0606 or lower hierarchy.