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HOPKINS WILLIAM C N

Overview
  • Total Patents
    12
About

HOPKINS WILLIAM C N has a total of 12 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, environmental technology and machines are HESS ENG INC, MCINERNEY SPRING & WIRE CO and HAYASHI TOSHIOMI.

Patent filings in countries

World map showing HOPKINS WILLIAM C Ns patent filings in countries
# Country Total Patents
#1 United States 7
#2 Canada 5

Patent filings per year

Chart showing HOPKINS WILLIAM C Ns patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hopkins William C N 12

Latest patents

Publication Filing date Title
US3318408A Change-speed mechanism
US3198546A Auxiliary wheel attachment for cycles
US3198552A Bumper hitch for tow attachments
US3002269A Method of forming ball and socket joints in metal tubular members
US3023995A Sealing and coupling structures
US3043393A Mufflers
US2693589A Heated side view mirror with clearance and indicating light
CA515833A Heated side view mirror with clearance and indicating light
CA654931A Sealing and coupling structures
CA684141A Mufflers
CA774856A Change-speed mechanism
CA646547A Method of forming ball and socket joints in metal tubular members