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PARK OHIO INDUSTRIES INC

Overview
  • Total Patents
    341
About

PARK OHIO INDUSTRIES INC has a total of 341 patent applications. Its first patent ever was published in 1963. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets electrical machinery and energy, materials and metallurgy and environmental technology are INDUCTOHEAT INC, FRANCIS STANISLAUS DENNEEN and BUDD INDUCTION HEATING INC.

Patent filings in countries

World map showing PARK OHIO INDUSTRIES INCs patent filings in countries

Patent filings per year

Chart showing PARK OHIO INDUSTRIES INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Balzer Norbert R 20
#2 Lewis John C 18
#3 Day Paul L 12
#4 Cachat John F 11
#5 Adams Graham R 9
#6 Soworowski David R 8
#7 Kasper Robert J 8
#8 Lewis J C 8
#9 Balzer Norbert Raymond 8
#10 Seyfried Richard F 8

Latest patents

Publication Filing date Title
US6238787B1 Method of attaching a strip to a rubber molded part
US5564345A Stackable table, table assembly, and tray and table combination
EP0159029A2 Method of and apparatus for heating magnetizable metal work pieces
US4625090A Apparatus for inductively heat treating workpiece bore walls
US4531987A Method for inductively heat treating workpiece bore walls
US4619717A Heating magnetic metal workpieces
US4531036A Apparatus and method for inductively hardening small bores
US4577081A Heating nonmagnetic metal workpieces
US4507722A Method and apparatus for controlling the power factor of a resonant inverter
US4538041A Rotating induction heating apparatus
US4438310A Method and apparatus for inductively heating valve seat inserts
US4468010A Method and apparatus for quench hardening thin-walled, elongated workpieces
US4475839A Sucker rod fitting
US4482879A Transformer core cooling arrangement
US4458127A Inductor for annealing work hardened portions of structural beams
US4537102A Method of shearing metal billets
CA1206075A Inductor and method for annealing work hardened portions of structural beams
US4501942A Method and apparatus for uniform induction heating of an elongated workpiece
US4420667A Induction heating method and apparatus for elongated workpieces
US4468549A Induction heater arrangement for forging bar stock