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CHICAGO LOCK CO

Overview
  • Total Patents
    180
About

CHICAGO LOCK CO has a total of 180 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, civil engineering and consumer goods are NAKAMURA KATORI, JONATHAN LOCK LTD and GENAKIS JOSEPH M.

Patent filings per year

Chart showing CHICAGO LOCK COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kerr William J 38
#2 Steinbach Robert L 32
#3 Christopher Walter S 13
#4 Kerr William John 10
#5 Steinbach Robert 9
#6 Scherbing Frank J 8
#7 Shinn William C 7
#8 Mikos Aloysius J 6
#9 William John Kerr 6
#10 Shinn Lyle B 6

Latest patents

Publication Filing date Title
US5916283A Key ring lock assembly
AU5380696A Multiple tumbler combination for axial pin tumbler lock
US5160180A Automatic quick open/close locking mechanism
US5106251A Automatic locking device for pop out handle locks
US4899565A Square shaped axial split pin tumbler lock
US4821539A Keeper lock for slide fastener
US4835998A Removable handle for T-handle lock assembly
US4712400A Removable cylinder lock
US4760721A Handle flange assembly
US4735069A Cylinder lock and key
US4671711A Key-cutting machine
CA1238797A Key and method of manufacture
US4617813A Lock-picking tool and method of use thereof
US4395893A Plate tumbler-type cylinder lock mechanism
US4446709A Cylinder lock mechanism
US4326396A Plate tumbler for a cylinder lock mechanism
US4249402A Keeper lock for a slide fastener
US4228668A Axial split-pin tumbler-type lock mechanism
US4227387A Axial split-pin tumbler-type lock mechanism
US4132092A Protective cover for a handle lock