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IPC Subgroup
A47C 3/2

Chairs or stools with vertically-adjustable seats

Introduced: September 1968

Last revised: January 2006

Full Title

Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats > Chairs or stools with vertically-adjustable seats

Classification Context

Section:
HUMAN NECESSITIES
Class:
FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
Subclass:
CHAIRS; SOFAS; BEDS

Filing statistics

IPC A47C 3/2 belongs to the parent subclass A47C, which recorded 166,495 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,487 in 2013 to 14,911 in 2023 (+42%), peaking at 19,260 applications in 2020. The most active applicants in class A47 are ZHEJIANG SUPOR (13,571 applications), MIDEA (10,855 applications) and JOYOUNG COMPANY (10,106 applications).

Source: EPO PATSTAT, worldwide filings

10 direct subcodes

Child Classifications

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  • A47C 3/22 with balancing device, e.g. by spring, by weight
  • A47C 3/24 with vertical spindle
  • A47C 3/26 with vertical toothed rack
  • A47C 3/28 with clamps acting on vertical rods
  • A47C 3/3 with vertically-acting fluid cylinder
  • A47C 3/32 with flexible height-adjusting means, e.g. rope, chain
  • A47C 3/34 with pins coacting with holes
  • A47C 3/36 with means, or adapted, for inclining the legs of the chair or stool for varying height of seat
  • A47C 3/38 with additional seat or additional legs for varying height of seat
  • A47C 3/4 Telescopic guides

Top Applicants

Top 10 applicants by patent filingsfor 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