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.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 7 | |
#2 | Canada | 5 |
# | Industry | |
---|---|---|
#1 | Transport | |
#2 | Environmental technology | |
#3 | Machines | |
#4 | Mechanical elements | |
#5 | Machine tools | |
#6 | Engines, pumps and turbines |
# | Technology | |
---|---|---|
#1 | Unspecified technologies | |
#2 | Gas-flow silencers for machines | |
#3 | Gearing | |
#4 | Nails | |
#5 | Cycle stands | |
#6 | Vehicle connections | |
#7 | Vehicle parts | |
#8 | Jet-propulsion plants | |
#9 | Punching metal | |
#10 | Wheelchairs and sledges |
# | Name | Total Patents |
---|---|---|
#1 | Hopkins William C N | 12 |
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 |