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DIFF Subgroup
A47C 23/05

Frames therefor; Connecting the springs to the frame

Introduced: September 1968

Full Title

Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases > using springs in compression, e.g. coiled > Frames therefor; Connecting the springs to the frame

Of 6 combined children, 2 exist in both systems.

3 codes are CPC-only extensions, 1 exist only in IPC.

IPC defines codes here since 1974.

Child Classifications

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  • A47C 23/0507 CPC only CPC only
  • A47C 23/0515 CPC only CPC only
  • A47C 23/0522 CPC only CPC only
  • A47C 23/053 Attachment or interconnection of springs in frames or in spring units since 1974 IPC only IPC only
  • A47C 23/055 using cords; using textile or rubber bands since 1974 IPC+CPC Available in IPC and CPC
  • A47C 23/057 Hangers or supports for fastening spring units to frame since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class A47,2013–2023, worldwide · Source: EPO PATSTAT

  1. ZHEJIANG SUPOR 13,571
  2. MIDEA 10,855
  3. JOYOUNG COMPANY 10,106
  4. FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING COMPANY 9,846
  5. LG ELECTRONICS KR 7,657
  6. GREE ELECTRIC APPLIANCES 4,805
  7. GUANGDONG MIDEA ELECTRICAL APPLIANCE COMPANY 4,508
  8. NINGBO FOTILE KITCHENWARE COMPANY 4,300
  9. HAIER SMART HOME 3,964
  10. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,910

Top Applicants (CPC)

Class A47,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG ELECTRONICS KR 8,633
  2. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 4,258
  3. SAMSUNG ELECTRONICS COMPANY KR 3,477
  4. MIDEA 3,257
  5. SEB FR 2,786
  6. FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MANUFACTURING COMPANY 2,614
  7. GREE ELECTRIC APPLIANCES 2,370
  8. VORWERK & CO. INTERHOLDING DE 2,248
  9. HAIER SMART HOME 2,169
  10. MIELE DE 2,019