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CHAPMAN CHARLES H

Overview
  • Total Patents
    20
About

CHAPMAN CHARLES H has a total of 20 patent applications. Its first patent ever was published in 1901. It filed its patents most often in United States and Canada. Its main competitors in its focus markets mechanical elements, textiles and paper and machines are SCHAEFFLER WILHELM, WANGER GERHARD and NORMA HOFFMANN BEARINGS CORP.

Patent filings in countries

World map showing CHAPMAN CHARLES Hs patent filings in countries
# Country Total Patents
#1 United States 16
#2 Canada 4

Patent filings per year

Chart showing CHAPMAN CHARLES Hs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chapman Charles H 20
#2 Chapman Frank F B 1

Latest patents

Publication Filing date Title
US1204938A Ball-bearing.
US1163212A Ball-bearing.
US1213805A Ball-bearing.
US1123485A Ball-bearing.
US1203309A Spinning-spindle.
US888694A Check-nut.
US875503A Spinning-spindle and bearing therefor.
CA104140A Bearing
CA104141A Bearing
US837038A Vehicle-tongue support.
US841485A Spinning-spindle and bearings therefor.
US785663A Ball-retainer for ball-bearings.
US761206A Vehicle-tongue support.
US779071A Ball-bearing.
US785150A Retainer and spacer for ball-bearings.
US785661A Bearing.
US785662A Bearing.
US714670A Apparatus for hardening the cups and cones of ball-bearings.
CA3076A Tape weaving loom
CA5916A Improvements on looms for weaving suspenders, &c.