Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Operation method of vertical furnace

Operation method of vertical furnace

US Patent 6129776 · Granted Oct 10, 2000

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Local dry etching apparatus2021
Electrolytic solution for nonaqueous electrolyte secondary battery and nonaqueou2013
Document carrier sheet2008
Carbon containing nonfired agglomerated ore for blast furnace and production met2005
Bed having mat support rolls rotated to move a mat for blood circulation of a pe1997
Compact optical character reading apparatus having multiple pivoting parts1994
Electronically controllable vibration damping device1991
Optical character reading apparatus with sorter1991
Electronically controllable vibration damper for use with automotive engine or t1990
Ignition timing adjusting apparatus for internal combustion engine1989
Water soluble extract from nonpathogenic aerobic corynebacteria1983
Process for producing sintered iron ore having high reducibility1982