Learn more

CLEVELAND GRAPHITE BRONZE CO

Overview
  • Total Patents
    227
About

CLEVELAND GRAPHITE BRONZE CO has a total of 227 patent applications. Its first patent ever was published in 1920. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, machine tools and mechanical elements are JOHNSON BRONZE CO, COLUMBUS AUTO PARTS and KAHR BEARING CORP.

Patent filings in countries

World map showing CLEVELAND GRAPHITE BRONZE COs patent filings in countries
# Country Total Patents
#1 United States 121
#2 Canada 39
#3 United Kingdom 32
#4 France 23
#5 Germany 12

Patent filings per year

Chart showing CLEVELAND GRAPHITE BRONZE COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Palm John V O 37
#2 Klocke William H 21
#3 Johnson Carl W 17
#4 Schaefer Ralph A 15
#5 Berger Stockfleth 15
#6 Swartz Carl E 13
#7 Myers James L 9
#8 Kerruish Edward P 9
#9 Salzman George S 9
#10 Wilkey John E 6

Latest patents

Publication Filing date Title
GB696306A Method of bonding aluminium to ferrous metal and article produced thereby
GB696307A Method of bonding aluminium to ferrous metal and article produced thereby
GB679947A Improvements in bearings
GB660389A Bearings
GB645368A Bearings
GB646506A Improvements in and relating to the manufacture of bimetallic material, suitable foruse in the production of bearing elements
US2611163A Method of making bearings
GB624401A Improvements in bearings
GB639570A Improvements in and relating to bearings
US2459172A Bearing
US2500206A Apparatus for plating
US2605149A Bearing
GB622200A Improvements in electro-plating with silver
US2470269A Friction material
GB628459A Electrodeposition of lead-antimony-tin alloys
US2500205A Method of plating
US2448314A Apparatus for checking the external diameters of annular objects
US2461350A Electrodeposition of leadantimony-tin alloys
GB566538A Method of cleaning and etching ferrous metal articles
GB578020A Bearings