1. CPC Sections
  2. CPC Section B
  3. CPC Class B21
  4. CPC Subclass B21G
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
B21G
MAKING NEEDLES, PINS OR NAILS OF METAL [2018-08]
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
B21G 1/00
Making needles used for performing operations (forming heads on pin-like needles B21G 3/12; making U-shaped hairpins B21G 7/04) [2013-01]
B21G 1/003
.
{Needles for special purposes, e.g. knitting, crochet, hat-pins} [2013-01]
B21G 1/006
.
{Special treatments of pins or needles, e.g. annealing, straightening} [2013-01]
B21G 1/02
.
of needles with eyes, e.g. sewing-needles, sewing-awls [2013-01]
B21G 1/04
. .
of needles specially adapted for use in machines or tools [2013-01]
B21G 1/06
.
of needles with hook or barb, e.g. crochet hooks [2013-01]
B21G 1/08
.
of hollow needles or needles with hollow end, e.g. hypodermic needles, larding-needles (B21G 1/10 takes precedence) [2013-01]
B21G 1/10
.
equipped with locking means for the material to be drawn through, e.g. for repairing tubeless tyres [2013-01]
B21G 1/12
.
Securing, cleaning-off burrs, reconditioning polishing, grinding (takes precedence over B21G 1/02 - B21G 1/10) [2016-05]
B21G 3/00
Making pins, nails, or the like (of pins with individual caps B21G 5/00; of U-like shape B21G 7/00; of split-pins B21G 7/08) [2013-01]
B21G 3/005
.
{Nails or pins for special purposes, e.g. curtain pins} [2013-01]
B21G 3/02
.
of pins of the kind used in the tailoring trade or the house- hold [2013-01]
B21G 3/04
. .
with locking or shielding device for the pin point, e.g. safety-pins [2013-01]
B21G 3/06
.
of nails with shoulders [2013-01]
B21G 3/08
.
of nails with head and two or more shanks or split shanks [2013-01]
B21G 3/10
.
of undulated nails or pins [2013-01]
B21G 3/12
.
Upsetting; Forming heads [2013-01]
B21G 3/14
.
Reducing diameter of parts otherwise than by rolling [2013-01]
B21G 3/16
.
Pointing; with or without cutting [2013-01]
B21G 3/18
.
by operations not restricted to one of the groups B21G 3/12 - B21G 3/16 (B21G 3/06 - B21G 3/10 take precedence) [2016-05]
B21G 3/20
. .
from wire of indefinite length (by rolling B21G 3/30) [2013-01]
B21G 3/22
. . .
in pairs arranged head to head [2013-01]
B21G 3/24
. . .
by simultaneously forming the head of one nail and the adjacent point of another [2013-01]
B21G 3/26
. .
by cutting from strip or sheet material [2013-01]
B21G 3/28
. .
by forging or pressing [2013-01]
B21G 3/30
. .
by rolling [2013-01]
B21G 3/32
.
Feeding material to be worked to nail or pin making machines [2013-01]
B21G 5/00
Making pins or nails with attached caps or with coated heads [2013-01]
B21G 5/02
.
of drawing-pins or pins of drawing-pin type [2013-01]
B21G 7/00
Making pins of U-like shape or split-pins (of paper fasteners or staples B21D 53/46, B21F 45/16) [2013-01]
B21G 7/02
.
of U-like shape [2013-01]
B21G 7/04
. .
of hairpins [2013-01]
B21G 7/06
. . .
of undulated hairpins [2013-01]
B21G 7/08
.
of split-pins, e.g. cotter-pins [2013-01]