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IPC Subgroup
B31C 11/04

for applying impregnating by coating-substances during the winding

Introduced: September 1968

Last revised: January 2006

Full Title

Machinery for winding combined with other machinery > for applying impregnating by coating-substances during the winding

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
Subclass:
MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER

Filing statistics

IPC B31C 11/04 belongs to the parent subclass B31C, which recorded 1,675 patent applications worldwide between 2013 and 2023. Annual filings grew from 106 in 2013 to 134 in 2023 (+26%), peaking at 240 applications in 2020. The most active applicants in class B31 are GPI (GRAPHIC PACKAGING INTERNATIONAL) (356 applications), KIMBERLY-CLARK CORPORATION (296 applications) and RANPAK CORPORATION (257 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class B31, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GPI (GRAPHIC PACKAGING INTERNATIONAL) US 356
  2. KIMBERLY-CLARK CORPORATION US 296
  3. RANPAK CORPORATION US 257
  4. P&G (PROCTER & GAMBLE COMPANY) US 228
  5. BOBST MEX CH 218
  6. JIANGSU NANJIANG MACHINERY COMPANY 214
  7. SINOTECHO (WUHAN) INTELLIGENT TECHNOLOGY COMPANY 209
  8. DONGGUAN HONGMING MACHINERY COMPANY 195
  9. BHS CORRUGATED MASCHINEN- UND ANLAGENBAU DE 192
  10. TETRA LAVAL HOLDINGS & FINANCE CH 183