Storing fluids in natural or artificial cavities or chambers in the earth

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
Subclass:: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS

Filing statistics

IPC B65G 5/00 belongs to the parent subclass B65G, which recorded 773,577 patent applications worldwide between 2013 and 2023. Annual filings grew from 27,737 in 2013 to 105,830 in 2023 (+282%), peaking at 107,540 applications in 2020. The most active applicants in class B65 are CANON (3,755 applications), SGCC(STATE GRID CORPORATION OF CHINA) (3,721 applications) and YOSHINO KOGYOSHO COMPANY (3,659 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Geothermal collectors using underground reservoirs for accumulating working fluids or intermediate fluids

Related Keywords

storing fluids in natural or artificial CAVITY(IES)storing GAS(ES) in natural or artificial cavities in the earth

Top Applicants

Top 10 applicants by patent filingsfor class B65, 2013–2023, worldwide · Source: EPO PATSTAT

CANON 3,755
SGCC(STATE GRID CORPORATION OF CHINA) 3,721
YOSHINO KOGYOSHO COMPANY 3,659
DNP (DAINIPPON PRINTING COMPANY) 3,573
KRONES DE 3,114
P&G (PROCTER & GAMBLE COMPANY) US 2,777
TOPPAN PRINTING COMPANY 2,720
SEIKO EPSON CORPORATION 2,574
KYOCERA DOCUMENT SOLUTIONS 2,371
RICOH COMPANY 2,349