by twisting, fixing the twist and backtwisting, i.e. by imparting false twist

Introduced: September 1968

Title

Titles differ between systems:

IPC: by twisting, fixing the twist and backtwisting, i.e . by imparting false twist

CPC: by twisting, fixing the twist and backtwisting, i.e. by imparting false twist

Full Title

Full titles differ between systems:

IPC:

Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics > by twisting, fixing the twist and backtwisting, i.e . by imparting false twist

CPC:

Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics (yarns per se D02G3/00; during formation of artificial filaments, threads, or the like D01D5/22; general aspects of chemical treatment D06M) > by twisting, fixing the twist and backtwisting, i.e. by imparting false twist

CPC subdivides this area 4x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Child Classifications

Navigate with arrow keys, Enter to open

D02G 1/0206 +9 CPC CPC only CPC only
D02G 1/028 CPC only CPC only
D02G 1/0286 +1 CPC CPC only CPC only
D02G 1/04 Devices for imparting false twist IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class D02,2013–2023, worldwide · Source: EPO PATSTAT

JIANGNAN UNIVERSITY 383
TORAY INDUSTRIES JP 349
TORAY INDUSTRIES 281
OERLIKON TEXTILE & COMPANY DE 224
CONTINENTAL REIFEN DE 208
NATIONAL DONG HWA UNIVERSITY 203
KOLON INDUSTRIES KR 188
WUHAN TEXTILE UNIVERSITY 184
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 176
TMT MACHINERY 155

Top Applicants (CPC)

Class D02,2013–2023, worldwide · Source: EPO PATSTAT

TORAY INDUSTRIES JP 443
OERLIKON TEXTILE & COMPANY DE 242
KOLON INDUSTRIES KR 232
CONTINENTAL REIFEN DE 204
JIANGNAN UNIVERSITY 193
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN FR 178
TMT MACHINERY 168
NATIONAL DONG HWA UNIVERSITY 163
WUHAN TEXTILE UNIVERSITY 153
P&G (PROCTER & GAMBLE COMPANY) US 131