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PCE
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DIFF Subgroup
B32B 5/32

layers being foamed

Introduced: September 1968

Title

Titles differ between systems:

IPC: both layers being foamed or specifically porous

CPC: layers being foamed

Full Title

Full titles differ between systems:

IPC:

Layered products characterised by the non-homogeneity or physical structure of a layer > characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous > both layers being foamed or specifically porous

CPC:

Layered products characterised by the non- homogeneity or physical structure > characterised by the presence of two or more layers which > layers being foamed

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

Top Applicants

Top Applicants (IPC)

Class B32,2013–2023, worldwide · Source: EPO PATSTAT

  1. NITTO DENKO CORPORATION JP 4,719
  2. DNP (DAINIPPON PRINTING COMPANY) 3,989
  3. SAINT-GOBAIN GLASS FR 3,695
  4. NITTO DENKO CORPORATION 3,002
  5. DOW GLOBAL TECHNOLOGIES US 2,809
  6. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 2,679
  7. FUJIFILM JP 2,360
  8. TOPPAN PRINTING COMPANY 2,310
  9. CORNING US 2,168
  10. SEKISUI CHEMICAL COMPANY JP 2,115

Top Applicants (CPC)

Class B32,2013–2023, worldwide · Source: EPO PATSTAT

  1. NITTO DENKO CORPORATION JP 5,666
  2. SAINT-GOBAIN GLASS FR 4,491
  3. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 3,703
  4. DOW GLOBAL TECHNOLOGIES US 3,403
  5. NITTO DENKO CORPORATION 3,009
  6. FUJIFILM JP 2,629
  7. CORNING US 2,623
  8. LG CHEM KR 2,576
  9. SEKISUI CHEMICAL COMPANY JP 2,482
  10. TORAY INDUSTRIES JP 2,189