Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Main Group
F21L 23/00

Non-electric hand-lamps for miners

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
LIGHTING
Subclass:
LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION

Filing statistics

IPC F21L 23/00 belongs to the parent subclass F21L, which recorded 25,594 patent applications worldwide between 2013 and 2023. Annual filings declined from 2,248 in 2013 to 1,716 in 2023 (-24%), peaking at 2,805 applications in 2021. The most active applicants in class F21 are PANASONIC INTELLECTUAL PROPERTY (3,883 applications), VALEO VISION (2,797 applications) and KOITO MANUFACTURING COMPANY (2,531 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

safety lamps for use in MINE(S), non-electric

Top Applicants

Top 10 applicants by patent filingsfor class F21, 2013–2023, worldwide · Source: EPO PATSTAT

  1. PANASONIC INTELLECTUAL PROPERTY 3,883
  2. VALEO VISION FR 2,797
  3. KOITO MANUFACTURING COMPANY 2,531
  4. OPPLE LIGHTING COMPANY 2,343
  5. SIGNIFY HOLDING NL 2,275
  6. TOSHIBA LIGHTING & TECHNOLOGY CORPORATION 1,982
  7. KOITO MANUFACTURING COMPANY JP 1,766
  8. LG INNOTEK COMPANY KR 1,651
  9. SUZHOU OPPLE LIGHTING COMPANY 1,633
  10. MITSUBISHI ELECTRIC CORPORATION 1,591