optical

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Looms with automatic weft replenishment > Controlling replenishment > Pirn feelers or other detectors for initiating replenishment > optical

CPC:

Looms with automatic weft replenishment (automatic replenishment in smallware looms D03D35/00, in circular looms D03D37/00) > Controlling replenishment > Pirn feelers or other detectors for initiating replenishment (weft stop motions D03D51/34) > optical

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class D03,2013–2023, worldwide · Source: EPO PATSTAT

TORAY INDUSTRIES JP 461
TORAY INDUSTRIES 324
SHANDONG RIFA TEXTILE MACHINERY COMPANY 279
TOYOTA INDUSTRIES CORPORATION 260
JIANGSU COLLEGE OF ENGINEERING AND TECHNOLOGY 259
ZHEJIANG SCI TECH UNIVERSITY 244
PICANOL BE 213
TOYOTA INDUSTRIES CORPORATION JP 192
FEDERAL-MOGUL POWERTRAIN US 175
NATIONAL DONG HWA UNIVERSITY 171

Top Applicants (CPC)

Class D03,2013–2023, worldwide · Source: EPO PATSTAT

TORAY INDUSTRIES JP 517
PICANOL BE 214
TOYOTA INDUSTRIES CORPORATION 210
JIANGSU COLLEGE OF ENGINEERING AND TECHNOLOGY 202
SANKO TEKSTIL ISLETMELERI SAN. VE TIC. TR 196
TOYOTA INDUSTRIES CORPORATION JP 193
FEDERAL-MOGUL POWERTRAIN US 188
SAFRAN AIRCRAFT ENGINES FR 187
SAFRAN FR 168
ASAHI KASEI JP 150